documentation: Bump version

We do not have the `com.apple.developer.networking.multicast` entitlement and are unable to obtain it for non-technical reasons.

Makefile

@@ -6,7 +6,7 @@ GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
 VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run github.com/sagernet/sing-box/cmd/internal/read_tag@latest)
 
-PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
+PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid= -checklinkname=0"
 MAIN_PARAMS = $(PARAMS) -tags "$(TAGS)"
 MAIN = ./cmd/sing-box
 PREFIX ?= $(shell go env GOPATH)

adapter/outbound.go

@@ -2,6 +2,7 @@ package adapter
 
 import (
 	"context"
+	"net/netip"
 
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
@@ -18,6 +19,11 @@ type Outbound interface {
 	N.Dialer
 }
 
+type OutboundWithPreferredRoutes interface {
+	PreferredDomain(domain string) bool
+	PreferredAddress(address netip.Addr) bool
+}
+
 type OutboundRegistry interface {
 	option.OutboundOptionsRegistry
 	CreateOutbound(ctx context.Context, router Router, logger log.ContextLogger, tag string, outboundType string, options any) (Outbound, error)

adapter/outbound/manager.go

@@ -56,6 +56,14 @@ func (m *Manager) Start(stage adapter.StartStage) error {
 	m.started = true
 	m.stage = stage
 	if stage == adapter.StartStateStart {
+		if m.defaultTag != "" && m.defaultOutbound == nil {
+			defaultEndpoint, loaded := m.endpoint.Get(m.defaultTag)
+			if !loaded {
+				m.access.Unlock()
+				return E.New("default outbound not found: ", m.defaultTag)
+			}
+			m.defaultOutbound = defaultEndpoint
+		}
 		if m.defaultOutbound == nil {
 			directOutbound, err := m.defaultOutboundFallback()
 			if err != nil {
@@ -66,14 +74,6 @@ func (m *Manager) Start(stage adapter.StartStage) error {
 			m.outboundByTag[directOutbound.Tag()] = directOutbound
 			m.defaultOutbound = directOutbound
 		}
-		if m.defaultTag != "" && m.defaultOutbound == nil {
-			defaultEndpoint, loaded := m.endpoint.Get(m.defaultTag)
-			if !loaded {
-				m.access.Unlock()
-				return E.New("default outbound not found: ", m.defaultTag)
-			}
-			m.defaultOutbound = defaultEndpoint
-		}
 		outbounds := m.outbounds
 		m.access.Unlock()
 		return m.startOutbounds(append(outbounds, common.Map(m.endpoint.Endpoints(), func(it adapter.Endpoint) adapter.Outbound { return it })...))

box.go

@@ -323,13 +323,14 @@ func New(options Options) (*Box, error) {
 			option.DirectOutboundOptions{},
 		)
 	})
-	dnsTransportManager.Initialize(common.Must1(
-		local.NewTransport(
+	dnsTransportManager.Initialize(func() (adapter.DNSTransport, error) {
+		return local.NewTransport(
 			ctx,
 			logFactory.NewLogger("dns/local"),
 			"local",
 			option.LocalDNSServerOptions{},
-		)))
+		)
+	})
 	if platformInterface != nil {
 		err = platformInterface.Initialize(networkManager)
 		if err != nil {

clients/android

@@ -1 +1 @@
-Subproject commit 6db8e06e8d6c77648e79e3f93bdd41a4d48cc319
+Subproject commit 597c18482f6edc44e0c94b7cc849dd03b2121c45

cmd/internal/build_libbox/main.go

@@ -46,7 +46,7 @@ var (
 	sharedFlags []string
 	debugFlags  []string
 	sharedTags  []string
-	darwinTags  []string
+	macOSTags   []string
 	memcTags    []string
 	notMemcTags []string
 	debugTags   []string
@@ -63,7 +63,7 @@ func init() {
 	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
 
 	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack")
-	darwinTags = append(darwinTags, "with_dhcp")
+	macOSTags = append(macOSTags, "with_dhcp")
 	memcTags = append(memcTags, "with_tailscale")
 	notMemcTags = append(notMemcTags, "with_low_memory")
 	debugTags = append(debugTags, "debug")
@@ -160,7 +160,9 @@ func buildApple() {
 		"-tags-not-macos=with_low_memory",
 	}
 	if !withTailscale {
-		args = append(args, "-tags-macos="+strings.Join(memcTags, ","))
+		args = append(args, "-tags-macos="+strings.Join(append(macOSTags, memcTags...), ","))
+	} else {
+		args = append(args, "-tags-macos="+strings.Join(macOSTags, ","))
 	}
 
 	if !debugEnabled {
@@ -169,7 +171,7 @@ func buildApple() {
 		args = append(args, debugFlags...)
 	}
 
-	tags := append(sharedTags, darwinTags...)
+	tags := sharedTags
 	if withTailscale {
 		tags = append(tags, memcTags...)
 	}

cmd/sing-box/cmd_rule_set_compile.go

@@ -6,8 +6,10 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/common/srs"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/route/rule"
 	"github.com/sagernet/sing/common/json"
 
 	"github.com/spf13/cobra"
@@ -69,7 +71,7 @@ func compileRuleSet(sourcePath string) error {
 	if err != nil {
 		return err
 	}
-	err = srs.Write(outputFile, plainRuleSet.Options, plainRuleSet.Version)
+	err = srs.Write(outputFile, plainRuleSet.Options, downgradeRuleSetVersion(plainRuleSet.Version, plainRuleSet.Options))
 	if err != nil {
 		outputFile.Close()
 		os.Remove(outputPath)
@@ -78,3 +80,18 @@ func compileRuleSet(sourcePath string) error {
 	outputFile.Close()
 	return nil
 }
+
+func downgradeRuleSetVersion(version uint8, options option.PlainRuleSet) uint8 {
+	if version == C.RuleSetVersion4 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
+		return rule.NetworkInterfaceAddress != nil && rule.NetworkInterfaceAddress.Size() > 0 ||
+			len(rule.DefaultInterfaceAddress) > 0
+	}) {
+		version = C.RuleSetVersion3
+	}
+	if version == C.RuleSetVersion3 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
+		return len(rule.NetworkType) > 0 || rule.NetworkIsExpensive || rule.NetworkIsConstrained
+	}) {
+		version = C.RuleSetVersion2
+	}
+	return version
+}

common/badtls/read_wait.go

@@ -128,6 +128,10 @@ func (c *ReadWaitConn) Upstream() any {
 	return c.Conn
 }
 
+func (c *ReadWaitConn) ReaderReplaceable() bool {
+	return true
+}
+
 var tlsRegistry []func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error)
 
 func init() {

common/badtls/read_wait_utls.go

@@ -6,22 +6,26 @@ import (
 	"net"
 	_ "unsafe"
 
-	"github.com/sagernet/sing/common"
-
 	"github.com/metacubex/utls"
 )
 
 func init() {
 	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
-		tlsConn, loaded := common.Cast[*tls.UConn](conn)
-		if !loaded {
-			return
+		switch tlsConn := conn.(type) {
+		case *tls.UConn:
+			return true, func() error {
+					return utlsReadRecord(tlsConn.Conn)
+				}, func() error {
+					return utlsHandlePostHandshakeMessage(tlsConn.Conn)
+				}
+		case *tls.Conn:
+			return true, func() error {
+					return utlsReadRecord(tlsConn)
+				}, func() error {
+					return utlsHandlePostHandshakeMessage(tlsConn)
+				}
 		}
-		return true, func() error {
-				return utlsReadRecord(tlsConn.Conn)
-			}, func() error {
-				return utlsHandlePostHandshakeMessage(tlsConn.Conn)
-			}
+		return
 	})
 }
 

common/srs/binary.go

@@ -12,6 +12,8 @@ import (
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/domain"
 	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/json/badjson"
+	"github.com/sagernet/sing/common/json/badoption"
 	"github.com/sagernet/sing/common/varbin"
 
 	"go4.org/netipx"
@@ -41,6 +43,8 @@ const (
 	ruleItemNetworkType
 	ruleItemNetworkIsExpensive
 	ruleItemNetworkIsConstrained
+	ruleItemNetworkInterfaceAddress
+	ruleItemDefaultInterfaceAddress
 	ruleItemFinal uint8 = 0xFF
 )
 
@@ -230,6 +234,51 @@ func readDefaultRule(reader varbin.Reader, recover bool) (rule option.DefaultHea
 			rule.NetworkIsExpensive = true
 		case ruleItemNetworkIsConstrained:
 			rule.NetworkIsConstrained = true
+		case ruleItemNetworkInterfaceAddress:
+			rule.NetworkInterfaceAddress = new(badjson.TypedMap[option.InterfaceType, badoption.Listable[*badoption.Prefixable]])
+			var size uint64
+			size, err = binary.ReadUvarint(reader)
+			if err != nil {
+				return
+			}
+			for i := uint64(0); i < size; i++ {
+				var key uint8
+				err = binary.Read(reader, binary.BigEndian, &key)
+				if err != nil {
+					return
+				}
+				var value []*badoption.Prefixable
+				var prefixCount uint64
+				prefixCount, err = binary.ReadUvarint(reader)
+				if err != nil {
+					return
+				}
+				for j := uint64(0); j < prefixCount; j++ {
+					var prefix netip.Prefix
+					prefix, err = readPrefix(reader)
+					if err != nil {
+						return
+					}
+					value = append(value, common.Ptr(badoption.Prefixable(prefix)))
+				}
+				rule.NetworkInterfaceAddress.Put(option.InterfaceType(key), value)
+			}
+		case ruleItemDefaultInterfaceAddress:
+			var value []*badoption.Prefixable
+			var prefixCount uint64
+			prefixCount, err = binary.ReadUvarint(reader)
+			if err != nil {
+				return
+			}
+			for j := uint64(0); j < prefixCount; j++ {
+				var prefix netip.Prefix
+				prefix, err = readPrefix(reader)
+				if err != nil {
+					return
+				}
+				value = append(value, common.Ptr(badoption.Prefixable(prefix)))
+			}
+			rule.DefaultInterfaceAddress = value
 		case ruleItemFinal:
 			err = binary.Read(reader, binary.BigEndian, &rule.Invert)
 			return
@@ -346,7 +395,7 @@ func writeDefaultRule(writer varbin.Writer, rule option.DefaultHeadlessRule, gen
 	}
 	if len(rule.NetworkType) > 0 {
 		if generateVersion < C.RuleSetVersion3 {
-			return E.New("network_type rule item is only supported in version 3 or later")
+			return E.New("`network_type` rule item is only supported in version 3 or later")
 		}
 		err = writeRuleItemUint8(writer, ruleItemNetworkType, rule.NetworkType)
 		if err != nil {
@@ -354,17 +403,71 @@ func writeDefaultRule(writer varbin.Writer, rule option.DefaultHeadlessRule, gen
 		}
 	}
 	if rule.NetworkIsExpensive {
+		if generateVersion < C.RuleSetVersion3 {
+			return E.New("`network_is_expensive` rule item is only supported in version 3 or later")
+		}
 		err = binary.Write(writer, binary.BigEndian, ruleItemNetworkIsExpensive)
 		if err != nil {
 			return err
 		}
 	}
 	if rule.NetworkIsConstrained {
+		if generateVersion < C.RuleSetVersion3 {
+			return E.New("`network_is_constrained` rule item is only supported in version 3 or later")
+		}
 		err = binary.Write(writer, binary.BigEndian, ruleItemNetworkIsConstrained)
 		if err != nil {
 			return err
 		}
 	}
+	if rule.NetworkInterfaceAddress != nil && rule.NetworkInterfaceAddress.Size() > 0 {
+		if generateVersion < C.RuleSetVersion4 {
+			return E.New("`network_interface_address` rule item is only supported in version 4 or later")
+		}
+		err = writer.WriteByte(ruleItemNetworkInterfaceAddress)
+		if err != nil {
+			return err
+		}
+		_, err = varbin.WriteUvarint(writer, uint64(rule.NetworkInterfaceAddress.Size()))
+		if err != nil {
+			return err
+		}
+		for _, entry := range rule.NetworkInterfaceAddress.Entries() {
+			err = binary.Write(writer, binary.BigEndian, uint8(entry.Key.Build()))
+			if err != nil {
+				return err
+			}
+			_, err = varbin.WriteUvarint(writer, uint64(len(entry.Value)))
+			if err != nil {
+				return err
+			}
+			for _, rawPrefix := range entry.Value {
+				err = writePrefix(writer, rawPrefix.Build(netip.Prefix{}))
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+	if len(rule.DefaultInterfaceAddress) > 0 {
+		if generateVersion < C.RuleSetVersion4 {
+			return E.New("`default_interface_address` rule item is only supported in version 4 or later")
+		}
+		err = writer.WriteByte(ruleItemDefaultInterfaceAddress)
+		if err != nil {
+			return err
+		}
+		_, err = varbin.WriteUvarint(writer, uint64(len(rule.DefaultInterfaceAddress)))
+		if err != nil {
+			return err
+		}
+		for _, rawPrefix := range rule.DefaultInterfaceAddress {
+			err = writePrefix(writer, rawPrefix.Build(netip.Prefix{}))
+			if err != nil {
+				return err
+			}
+		}
+	}
 	if len(rule.WIFISSID) > 0 {
 		err = writeRuleItemString(writer, ruleItemWIFISSID, rule.WIFISSID)
 		if err != nil {

common/srs/ip_cidr.go

@@ -0,0 +1,33 @@
+package srs
+
+import (
+	"encoding/binary"
+	"net/netip"
+
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/varbin"
+)
+
+func readPrefix(reader varbin.Reader) (netip.Prefix, error) {
+	addrSlice, err := varbin.ReadValue[[]byte](reader, binary.BigEndian)
+	if err != nil {
+		return netip.Prefix{}, err
+	}
+	prefixBits, err := varbin.ReadValue[uint8](reader, binary.BigEndian)
+	if err != nil {
+		return netip.Prefix{}, err
+	}
+	return netip.PrefixFrom(M.AddrFromIP(addrSlice), int(prefixBits)), nil
+}
+
+func writePrefix(writer varbin.Writer, prefix netip.Prefix) error {
+	err := varbin.Write(writer, binary.BigEndian, prefix.Addr().AsSlice())
+	if err != nil {
+		return err
+	}
+	err = binary.Write(writer, binary.BigEndian, uint8(prefix.Bits()))
+	if err != nil {
+		return err
+	}
+	return nil
+}

common/tls/client.go

@@ -2,10 +2,11 @@ package tls
 
 import (
 	"context"
+	"crypto/tls"
+	"errors"
 	"net"
 	"os"
 
-	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/badtls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
@@ -14,7 +15,7 @@ import (
 	aTLS "github.com/sagernet/sing/common/tls"
 )
 
-func NewDialerFromOptions(ctx context.Context, router adapter.Router, dialer N.Dialer, serverAddress string, options option.OutboundTLSOptions) (N.Dialer, error) {
+func NewDialerFromOptions(ctx context.Context, dialer N.Dialer, serverAddress string, options option.OutboundTLSOptions) (N.Dialer, error) {
 	if !options.Enabled {
 		return dialer, nil
 	}
@@ -53,26 +54,57 @@ func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, e
 	return tlsConn, nil
 }
 
-type Dialer struct {
+type Dialer interface {
+	N.Dialer
+	DialTLSContext(ctx context.Context, destination M.Socksaddr) (Conn, error)
+}
+
+type defaultDialer struct {
 	dialer N.Dialer
 	config Config
 }
 
-func NewDialer(dialer N.Dialer, config Config) N.Dialer {
-	return &Dialer{dialer, config}
+func NewDialer(dialer N.Dialer, config Config) Dialer {
+	return &defaultDialer{dialer, config}
 }
 
-func (d *Dialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
-	if network != N.NetworkTCP {
+func (d *defaultDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	if N.NetworkName(network) != N.NetworkTCP {
 		return nil, os.ErrInvalid
 	}
-	conn, err := d.dialer.DialContext(ctx, network, destination)
+	return d.DialTLSContext(ctx, destination)
+}
+
+func (d *defaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	return nil, os.ErrInvalid
+}
+
+func (d *defaultDialer) DialTLSContext(ctx context.Context, destination M.Socksaddr) (Conn, error) {
+	return d.dialContext(ctx, destination, true)
+}
+
+func (d *defaultDialer) dialContext(ctx context.Context, destination M.Socksaddr, echRetry bool) (Conn, error) {
+	conn, err := d.dialer.DialContext(ctx, N.NetworkTCP, destination)
 	if err != nil {
 		return nil, err
 	}
-	return ClientHandshake(ctx, conn, d.config)
+	tlsConn, err := ClientHandshake(ctx, conn, d.config)
+	if err == nil {
+		return tlsConn, nil
+	}
+	conn.Close()
+	if echRetry {
+		var echErr *tls.ECHRejectionError
+		if errors.As(err, &echErr) && len(echErr.RetryConfigList) > 0 {
+			if echConfig, isECH := d.config.(ECHCapableConfig); isECH {
+				echConfig.SetECHConfigList(echErr.RetryConfigList)
+			}
+		}
+		return d.dialContext(ctx, destination, false)
+	}
+	return nil, err
 }
 
-func (d *Dialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
-	return nil, os.ErrInvalid
+func (d *defaultDialer) Upstream() any {
+	return d.dialer
 }

common/tls/reality_server.go

@@ -206,3 +206,11 @@ func (c *realityConnWrapper) Upstream() any {
 func (c *realityConnWrapper) CloseWrite() error {
 	return c.Close()
 }
+
+func (c *realityConnWrapper) ReaderReplaceable() bool {
+	return true
+}
+
+func (c *realityConnWrapper) WriterReplaceable() bool {
+	return true
+}

common/tls/utls_client.go

@@ -106,6 +106,14 @@ func (c *utlsConnWrapper) Upstream() any {
 	return c.UConn
 }
 
+func (c *utlsConnWrapper) ReaderReplaceable() bool {
+	return true
+}
+
+func (c *utlsConnWrapper) WriterReplaceable() bool {
+	return true
+}
+
 type utlsALPNWrapper struct {
 	utlsConnWrapper
 	nextProtocols []string

common/tlsfragment/conn.go

@@ -109,6 +109,9 @@ func (c *Conn) Write(b []byte) (n int, err error) {
 						if err != nil {
 							return
 						}
+						if i != len(splitIndexes) {
+							time.Sleep(c.fallbackDelay)
+						}
 					}
 				}
 			}

common/tlsfragment/wait_stub.go

@@ -9,6 +9,10 @@ import (
 )
 
 func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fallbackDelay time.Duration) error {
+	_, err := conn.Write(payload)
+	if err != nil {
+		return err
+	}
 	time.Sleep(fallbackDelay)
 	return nil
 }

common/tlsfragment/wait_windows.go

@@ -16,6 +16,9 @@ func writeAndWaitAck(ctx context.Context, conn *net.TCPConn, payload []byte, fal
 	err := winiphlpapi.WriteAndWaitAck(ctx, conn, payload)
 	if err != nil {
 		if errors.Is(err, windows.ERROR_ACCESS_DENIED) {
+			if _, err := conn.Write(payload); err != nil {
+				return err
+			}
 			time.Sleep(fallbackDelay)
 			return nil
 		}

constant/rule.go

@@ -22,7 +22,8 @@ const (
 	RuleSetVersion1 = 1 + iota
 	RuleSetVersion2
 	RuleSetVersion3
-	RuleSetVersionCurrent = RuleSetVersion3
+	RuleSetVersion4
+	RuleSetVersionCurrent = RuleSetVersion4
 )
 
 const (

dns/transport/dhcp/dhcp.go

@@ -9,10 +9,8 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
@@ -29,6 +27,7 @@ import (
 
 	"github.com/insomniacslk/dhcp/dhcpv4"
 	mDNS "github.com/miekg/dns"
+	"golang.org/x/exp/slices"
 )
 
 func RegisterTransport(registry *dns.TransportRegistry) {
@@ -45,9 +44,12 @@ type Transport struct {
 	networkManager    adapter.NetworkManager
 	interfaceName     string
 	interfaceCallback *list.Element[tun.DefaultInterfaceUpdateCallback]
-	transports        []adapter.DNSTransport
-	updateAccess      sync.Mutex
+	transportLock     sync.RWMutex
 	updatedAt         time.Time
+	servers           []M.Socksaddr
+	search            []string
+	ndots             int
+	attempts          int
 }
 
 func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.DHCPDNSServerOptions) (adapter.DNSTransport, error) {
@@ -62,27 +64,40 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 		logger:           logger,
 		networkManager:   service.FromContext[adapter.NetworkManager](ctx),
 		interfaceName:    options.Interface,
+		ndots:            1,
+		attempts:         2,
 	}, nil
 }
 
+func NewRawTransport(transportAdapter dns.TransportAdapter, ctx context.Context, dialer N.Dialer, logger log.ContextLogger) *Transport {
+	return &Transport{
+		TransportAdapter: transportAdapter,
+		ctx:              ctx,
+		dialer:           dialer,
+		logger:           logger,
+		networkManager:   service.FromContext[adapter.NetworkManager](ctx),
+		ndots:            1,
+		attempts:         2,
+	}
+}
+
 func (t *Transport) Start(stage adapter.StartStage) error {
 	if stage != adapter.StartStateStart {
 		return nil
 	}
-	err := t.fetchServers()
-	if err != nil {
-		return err
-	}
 	if t.interfaceName == "" {
 		t.interfaceCallback = t.networkManager.InterfaceMonitor().RegisterCallback(t.interfaceUpdated)
 	}
+	go func() {
+		_, err := t.Fetch()
+		if err != nil {
+			t.logger.Error(E.Cause(err, "fetch DNS servers"))
+		}
+	}()
 	return nil
 }
 
 func (t *Transport) Close() error {
-	for _, transport := range t.transports {
-		transport.Close()
-	}
 	if t.interfaceCallback != nil {
 		t.networkManager.InterfaceMonitor().UnregisterCallback(t.interfaceCallback)
 	}
@@ -90,23 +105,44 @@ func (t *Transport) Close() error {
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	err := t.fetchServers()
+	servers, err := t.Fetch()
 	if err != nil {
 		return nil, err
 	}
-
-	if len(t.transports) == 0 {
+	if len(servers) == 0 {
 		return nil, E.New("dhcp: empty DNS servers from response")
 	}
+	return t.Exchange0(ctx, message, servers)
+}
 
-	var response *mDNS.Msg
-	for _, transport := range t.transports {
-		response, err = transport.Exchange(ctx, message)
-		if err == nil {
-			return response, nil
-		}
+func (t *Transport) Exchange0(ctx context.Context, message *mDNS.Msg, servers []M.Socksaddr) (*mDNS.Msg, error) {
+	question := message.Question[0]
+	domain := dns.FqdnToDomain(question.Name)
+	if len(servers) == 1 || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
+		return t.exchangeSingleRequest(ctx, servers, message, domain)
+	} else {
+		return t.exchangeParallel(ctx, servers, message, domain)
 	}
-	return nil, err
+}
+
+func (t *Transport) Fetch() ([]M.Socksaddr, error) {
+	t.transportLock.RLock()
+	updatedAt := t.updatedAt
+	servers := t.servers
+	t.transportLock.RUnlock()
+	if time.Since(updatedAt) < C.DHCPTTL {
+		return servers, nil
+	}
+	t.transportLock.Lock()
+	defer t.transportLock.Unlock()
+	if time.Since(t.updatedAt) < C.DHCPTTL {
+		return t.servers, nil
+	}
+	err := t.updateServers()
+	if err != nil {
+		return nil, err
+	}
+	return t.servers, nil
 }
 
 func (t *Transport) fetchInterface() (*control.Interface, error) {
@@ -124,18 +160,6 @@ func (t *Transport) fetchInterface() (*control.Interface, error) {
 	}
 }
 
-func (t *Transport) fetchServers() error {
-	if time.Since(t.updatedAt) < C.DHCPTTL {
-		return nil
-	}
-	t.updateAccess.Lock()
-	defer t.updateAccess.Unlock()
-	if time.Since(t.updatedAt) < C.DHCPTTL {
-		return nil
-	}
-	return t.updateServers()
-}
-
 func (t *Transport) updateServers() error {
 	iface, err := t.fetchInterface()
 	if err != nil {
@@ -148,7 +172,7 @@ func (t *Transport) updateServers() error {
 	cancel()
 	if err != nil {
 		return err
-	} else if len(t.transports) == 0 {
+	} else if len(t.servers) == 0 {
 		return E.New("dhcp: empty DNS servers response")
 	} else {
 		t.updatedAt = time.Now()
@@ -177,7 +201,11 @@ func (t *Transport) fetchServers0(ctx context.Context, iface *control.Interface)
 	}
 	defer packetConn.Close()
 
-	discovery, err := dhcpv4.NewDiscovery(iface.HardwareAddr, dhcpv4.WithBroadcast(true), dhcpv4.WithRequestedOptions(dhcpv4.OptionDomainNameServer))
+	discovery, err := dhcpv4.NewDiscovery(iface.HardwareAddr, dhcpv4.WithBroadcast(true), dhcpv4.WithRequestedOptions(
+		dhcpv4.OptionDomainName,
+		dhcpv4.OptionDomainNameServer,
+		dhcpv4.OptionDNSDomainSearchList,
+	))
 	if err != nil {
 		return err
 	}
@@ -223,31 +251,23 @@ func (t *Transport) fetchServersResponse(iface *control.Interface, packetConn ne
 			continue
 		}
 
-		dns := dhcpPacket.DNS()
-		if len(dns) == 0 {
-			return nil
-		}
-		return t.recreateServers(iface, common.Map(dns, func(it net.IP) M.Socksaddr {
-			return M.SocksaddrFrom(M.AddrFromIP(it), 53)
-		}))
+		return t.recreateServers(iface, dhcpPacket)
 	}
 }
 
-func (t *Transport) recreateServers(iface *control.Interface, serverAddrs []M.Socksaddr) error {
-	if len(serverAddrs) > 0 {
-		t.logger.Info("dhcp: updated DNS servers from ", iface.Name, ": [", strings.Join(common.Map(serverAddrs, M.Socksaddr.String), ","), "]")
+func (t *Transport) recreateServers(iface *control.Interface, dhcpPacket *dhcpv4.DHCPv4) error {
+	searchList := dhcpPacket.DomainSearch()
+	if searchList != nil && len(searchList.Labels) > 0 {
+		t.search = searchList.Labels
+	} else if dhcpPacket.DomainName() != "" {
+		t.search = []string{dhcpPacket.DomainName()}
 	}
-	serverDialer := common.Must1(dialer.NewDefault(t.ctx, option.DialerOptions{
-		BindInterface:      iface.Name,
-		UDPFragmentDefault: true,
-	}))
-	var transports []adapter.DNSTransport
-	for _, serverAddr := range serverAddrs {
-		transports = append(transports, transport.NewUDPRaw(t.logger, t.TransportAdapter, serverDialer, serverAddr))
+	serverAddrs := common.Map(dhcpPacket.DNS(), func(it net.IP) M.Socksaddr {
+		return M.SocksaddrFrom(M.AddrFromIP(it), 53)
+	})
+	if len(serverAddrs) > 0 && !slices.Equal(t.servers, serverAddrs) {
+		t.logger.Info("dhcp: updated DNS servers from ", iface.Name, ": [", strings.Join(common.Map(serverAddrs, M.Socksaddr.String), ","), "], search: [", strings.Join(t.search, ","), "]")
 	}
-	for _, transport := range t.transports {
-		transport.Close()
-	}
-	t.transports = transports
+	t.servers = serverAddrs
 	return nil
 }

dns/transport/dhcp/dhcp_shared.go

@@ -0,0 +1,202 @@
+package dhcp
+
+import (
+	"context"
+	"math/rand"
+	"strings"
+	"time"
+
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	mDNS "github.com/miekg/dns"
+)
+
+const (
+	// net.maxDNSPacketSize
+	maxDNSPacketSize = 1232
+)
+
+func (t *Transport) exchangeSingleRequest(ctx context.Context, servers []M.Socksaddr, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	var lastErr error
+	for _, fqdn := range t.nameList(domain) {
+		response, err := t.tryOneName(ctx, servers, fqdn, message)
+		if err != nil {
+			lastErr = err
+			continue
+		}
+		return response, nil
+	}
+	return nil, lastErr
+}
+
+func (t *Transport) exchangeParallel(ctx context.Context, servers []M.Socksaddr, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	returned := make(chan struct{})
+	defer close(returned)
+	type queryResult struct {
+		response *mDNS.Msg
+		err      error
+	}
+	results := make(chan queryResult)
+	startRacer := func(ctx context.Context, fqdn string) {
+		response, err := t.tryOneName(ctx, servers, fqdn, message)
+		if err == nil {
+			if response.Rcode != mDNS.RcodeSuccess {
+				err = dns.RcodeError(response.Rcode)
+			} else if len(dns.MessageToAddresses(response)) == 0 {
+				err = E.New(fqdn, ": empty result")
+			}
+		}
+		select {
+		case results <- queryResult{response, err}:
+		case <-returned:
+		}
+	}
+	queryCtx, queryCancel := context.WithCancel(ctx)
+	defer queryCancel()
+	var nameCount int
+	for _, fqdn := range t.nameList(domain) {
+		nameCount++
+		go startRacer(queryCtx, fqdn)
+	}
+	var errors []error
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case result := <-results:
+			if result.err == nil {
+				return result.response, nil
+			}
+			errors = append(errors, result.err)
+			if len(errors) == nameCount {
+				return nil, E.Errors(errors...)
+			}
+		}
+	}
+}
+
+func (t *Transport) tryOneName(ctx context.Context, servers []M.Socksaddr, fqdn string, message *mDNS.Msg) (*mDNS.Msg, error) {
+	sLen := len(servers)
+	var lastErr error
+	for i := 0; i < t.attempts; i++ {
+		for j := 0; j < sLen; j++ {
+			server := servers[j]
+			question := message.Question[0]
+			question.Name = fqdn
+			response, err := t.exchangeOne(ctx, server, question, C.DNSTimeout, false, true)
+			if err != nil {
+				lastErr = err
+				continue
+			}
+			return response, nil
+		}
+	}
+	return nil, E.Cause(lastErr, fqdn)
+}
+
+func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
+	if server.Port == 0 {
+		server.Port = 53
+	}
+	var networks []string
+	if useTCP {
+		networks = []string{N.NetworkTCP}
+	} else {
+		networks = []string{N.NetworkUDP, N.NetworkTCP}
+	}
+	request := &mDNS.Msg{
+		MsgHdr: mDNS.MsgHdr{
+			Id:                uint16(rand.Uint32()),
+			RecursionDesired:  true,
+			AuthenticatedData: ad,
+		},
+		Question: []mDNS.Question{question},
+		Compress: true,
+	}
+	request.SetEdns0(maxDNSPacketSize, false)
+	buffer := buf.Get(buf.UDPBufferSize)
+	defer buf.Put(buffer)
+	for _, network := range networks {
+		ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
+		defer cancel()
+		conn, err := t.dialer.DialContext(ctx, network, server)
+		if err != nil {
+			return nil, err
+		}
+		defer conn.Close()
+		if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
+			conn.SetDeadline(deadline)
+		}
+		rawMessage, err := request.PackBuffer(buffer)
+		if err != nil {
+			return nil, E.Cause(err, "pack request")
+		}
+		_, err = conn.Write(rawMessage)
+		if err != nil {
+			return nil, E.Cause(err, "write request")
+		}
+		n, err := conn.Read(buffer)
+		if err != nil {
+			return nil, E.Cause(err, "read response")
+		}
+		var response mDNS.Msg
+		err = response.Unpack(buffer[:n])
+		if err != nil {
+			return nil, E.Cause(err, "unpack response")
+		}
+		if response.Truncated && network == N.NetworkUDP {
+			continue
+		}
+		return &response, nil
+	}
+	panic("unexpected")
+}
+
+func (t *Transport) nameList(name string) []string {
+	l := len(name)
+	rooted := l > 0 && name[l-1] == '.'
+	if l > 254 || l == 254 && !rooted {
+		return nil
+	}
+
+	if rooted {
+		if avoidDNS(name) {
+			return nil
+		}
+		return []string{name}
+	}
+
+	hasNdots := strings.Count(name, ".") >= t.ndots
+	name += "."
+	// l++
+
+	names := make([]string, 0, 1+len(t.search))
+	if hasNdots && !avoidDNS(name) {
+		names = append(names, name)
+	}
+	for _, suffix := range t.search {
+		fqdn := name + suffix
+		if !avoidDNS(fqdn) && len(fqdn) <= 254 {
+			names = append(names, fqdn)
+		}
+	}
+	if !hasNdots && !avoidDNS(name) {
+		names = append(names, name)
+	}
+	return names
+}
+
+func avoidDNS(name string) bool {
+	if name == "" {
+		return true
+	}
+	if name[len(name)-1] == '.' {
+		name = name[:len(name)-1]
+	}
+	return strings.HasSuffix(name, ".onion")
+}

dns/transport/local/local.go

@@ -1,9 +1,9 @@
+//go:build !darwin
+
 package local
 
 import (
 	"context"
-	"math/rand"
-	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
@@ -11,21 +11,27 @@ import (
 	"github.com/sagernet/sing-box/dns/transport/hosts"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/logger"
 	N "github.com/sagernet/sing/common/network"
 
 	mDNS "github.com/miekg/dns"
 )
 
+func RegisterTransport(registry *dns.TransportRegistry) {
+	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewTransport)
+}
+
 var _ adapter.DNSTransport = (*Transport)(nil)
 
 type Transport struct {
 	dns.TransportAdapter
-	ctx    context.Context
-	hosts  *hosts.File
-	dialer N.Dialer
+	ctx      context.Context
+	logger   logger.ContextLogger
+	hosts    *hosts.File
+	dialer   N.Dialer
+	preferGo bool
+	resolved ResolvedResolver
 }
 
 func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
@@ -36,20 +42,45 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 	return &Transport{
 		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options),
 		ctx:              ctx,
+		logger:           logger,
 		hosts:            hosts.NewFile(hosts.DefaultPath),
 		dialer:           transportDialer,
+		preferGo:         options.PreferGo,
 	}, nil
 }
 
 func (t *Transport) Start(stage adapter.StartStage) error {
+	switch stage {
+	case adapter.StartStateInitialize:
+		if !t.preferGo {
+			resolvedResolver, err := NewResolvedResolver(t.ctx, t.logger)
+			if err == nil {
+				err = resolvedResolver.Start()
+				if err == nil {
+					t.resolved = resolvedResolver
+				} else {
+					t.logger.Warn(E.Cause(err, "initialize resolved resolver"))
+				}
+			}
+		}
+	}
 	return nil
 }
 
 func (t *Transport) Close() error {
+	if t.resolved != nil {
+		return t.resolved.Close()
+	}
 	return nil
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	if t.resolved != nil {
+		resolverObject := t.resolved.Object()
+		if resolverObject != nil {
+			return t.resolved.Exchange(resolverObject, ctx, message)
+		}
+	}
 	question := message.Question[0]
 	domain := dns.FqdnToDomain(question.Name)
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
@@ -58,147 +89,5 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
 		}
 	}
-	systemConfig := getSystemDNSConfig(t.ctx)
-	if systemConfig.singleRequest || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
-		return t.exchangeSingleRequest(ctx, systemConfig, message, domain)
-	} else {
-		return t.exchangeParallel(ctx, systemConfig, message, domain)
-	}
-}
-
-func (t *Transport) exchangeSingleRequest(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
-	var lastErr error
-	for _, fqdn := range systemConfig.nameList(domain) {
-		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
-		if err != nil {
-			lastErr = err
-			continue
-		}
-		return response, nil
-	}
-	return nil, lastErr
-}
-
-func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
-	returned := make(chan struct{})
-	defer close(returned)
-	type queryResult struct {
-		response *mDNS.Msg
-		err      error
-	}
-	results := make(chan queryResult)
-	startRacer := func(ctx context.Context, fqdn string) {
-		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
-		if err == nil {
-			if response.Rcode != mDNS.RcodeSuccess {
-				err = dns.RcodeError(response.Rcode)
-			} else if len(dns.MessageToAddresses(response)) == 0 {
-				err = E.New(fqdn, ": empty result")
-			}
-		}
-		select {
-		case results <- queryResult{response, err}:
-		case <-returned:
-		}
-	}
-	queryCtx, queryCancel := context.WithCancel(ctx)
-	defer queryCancel()
-	var nameCount int
-	for _, fqdn := range systemConfig.nameList(domain) {
-		nameCount++
-		go startRacer(queryCtx, fqdn)
-	}
-	var errors []error
-	for {
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case result := <-results:
-			if result.err == nil {
-				return result.response, nil
-			}
-			errors = append(errors, result.err)
-			if len(errors) == nameCount {
-				return nil, E.Errors(errors...)
-			}
-		}
-	}
-}
-
-func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn string, message *mDNS.Msg) (*mDNS.Msg, error) {
-	serverOffset := config.serverOffset()
-	sLen := uint32(len(config.servers))
-	var lastErr error
-	for i := 0; i < config.attempts; i++ {
-		for j := uint32(0); j < sLen; j++ {
-			server := config.servers[(serverOffset+j)%sLen]
-			question := message.Question[0]
-			question.Name = fqdn
-			response, err := t.exchangeOne(ctx, M.ParseSocksaddr(server), question, config.timeout, config.useTCP, config.trustAD)
-			if err != nil {
-				lastErr = err
-				continue
-			}
-			return response, nil
-		}
-	}
-	return nil, E.Cause(lastErr, fqdn)
-}
-
-func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
-	if server.Port == 0 {
-		server.Port = 53
-	}
-	var networks []string
-	if useTCP {
-		networks = []string{N.NetworkTCP}
-	} else {
-		networks = []string{N.NetworkUDP, N.NetworkTCP}
-	}
-	request := &mDNS.Msg{
-		MsgHdr: mDNS.MsgHdr{
-			Id:                uint16(rand.Uint32()),
-			RecursionDesired:  true,
-			AuthenticatedData: ad,
-		},
-		Question: []mDNS.Question{question},
-		Compress: true,
-	}
-	request.SetEdns0(maxDNSPacketSize, false)
-	buffer := buf.Get(buf.UDPBufferSize)
-	defer buf.Put(buffer)
-	for _, network := range networks {
-		ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
-		defer cancel()
-		conn, err := t.dialer.DialContext(ctx, network, server)
-		if err != nil {
-			return nil, err
-		}
-		defer conn.Close()
-		if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
-			conn.SetDeadline(deadline)
-		}
-		rawMessage, err := request.PackBuffer(buffer)
-		if err != nil {
-			return nil, E.Cause(err, "pack request")
-		}
-		_, err = conn.Write(rawMessage)
-		if err != nil {
-			return nil, E.Cause(err, "write request")
-		}
-		n, err := conn.Read(buffer)
-		if err != nil {
-			return nil, E.Cause(err, "read response")
-		}
-		var response mDNS.Msg
-		err = response.Unpack(buffer[:n])
-		if err != nil {
-			return nil, E.Cause(err, "unpack response")
-		}
-		if response.Truncated && network == N.NetworkUDP {
-			continue
-		}
-		return &response, nil
-	}
-	panic("unexpected")
+	return t.exchange(ctx, message, domain)
 }

dns/transport/local/local_darwin.go

@@ -0,0 +1,142 @@
+//go:build darwin
+
+package local
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	mDNS "github.com/miekg/dns"
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/dns/transport/hosts"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
+)
+
+func RegisterTransport(registry *dns.TransportRegistry) {
+	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewTransport)
+}
+
+var _ adapter.DNSTransport = (*Transport)(nil)
+
+type Transport struct {
+	dns.TransportAdapter
+	ctx           context.Context
+	logger        logger.ContextLogger
+	hosts         *hosts.File
+	dialer        N.Dialer
+	preferGo      bool
+	fallback      bool
+	dhcpTransport dhcpTransport
+	resolver      net.Resolver
+}
+
+type dhcpTransport interface {
+	adapter.DNSTransport
+	Fetch() ([]M.Socksaddr, error)
+	Exchange0(ctx context.Context, message *mDNS.Msg, servers []M.Socksaddr) (*mDNS.Msg, error)
+}
+
+func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
+	transportDialer, err := dns.NewLocalDialer(ctx, options)
+	if err != nil {
+		return nil, err
+	}
+	transportAdapter := dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options)
+	return &Transport{
+		TransportAdapter: transportAdapter,
+		ctx:              ctx,
+		logger:           logger,
+		hosts:            hosts.NewFile(hosts.DefaultPath),
+		dialer:           transportDialer,
+		preferGo:         options.PreferGo,
+	}, nil
+}
+
+func (t *Transport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	inboundManager := service.FromContext[adapter.InboundManager](t.ctx)
+	for _, inbound := range inboundManager.Inbounds() {
+		if inbound.Type() == C.TypeTun {
+			t.fallback = true
+			break
+		}
+	}
+	if !C.IsIos {
+		if t.fallback {
+			t.dhcpTransport = newDHCPTransport(t.TransportAdapter, log.ContextWithOverrideLevel(t.ctx, log.LevelDebug), t.dialer, t.logger)
+			if t.dhcpTransport != nil {
+				err := t.dhcpTransport.Start(stage)
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (t *Transport) Close() error {
+	return common.Close(
+		t.dhcpTransport,
+	)
+}
+
+func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	question := message.Question[0]
+	domain := dns.FqdnToDomain(question.Name)
+	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		addresses := t.hosts.Lookup(domain)
+		if len(addresses) > 0 {
+			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+		}
+	}
+	if !t.fallback {
+		return t.exchange(ctx, message, domain)
+	}
+	if !C.IsIos {
+		if t.dhcpTransport != nil {
+			dhcpTransports, _ := t.dhcpTransport.Fetch()
+			if len(dhcpTransports) > 0 {
+				return t.dhcpTransport.Exchange0(ctx, message, dhcpTransports)
+			}
+		}
+	}
+	if t.preferGo {
+		// Assuming the user knows what they are doing, we still execute the query which will fail.
+		return t.exchange(ctx, message, domain)
+	}
+	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		var network string
+		if question.Qtype == mDNS.TypeA {
+			network = "ip4"
+		} else {
+			network = "ip6"
+		}
+		addresses, err := t.resolver.LookupNetIP(ctx, network, domain)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+	}
+	if C.IsIos {
+		return nil, E.New("only A and AAAA queries are supported on iOS and tvOS when using NetworkExtension.")
+	} else {
+		return nil, E.New("only A and AAAA queries are supported on macOS when using NetworkExtension and DHCP unavailable.")
+	}
+}

dns/transport/local/local_darwin_dhcp.go

@@ -0,0 +1,16 @@
+//go:build darwin && with_dhcp
+
+package local
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/dns/transport/dhcp"
+	"github.com/sagernet/sing-box/log"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func newDHCPTransport(transportAdapter dns.TransportAdapter, ctx context.Context, dialer N.Dialer, logger log.ContextLogger) dhcpTransport {
+	return dhcp.NewRawTransport(transportAdapter, ctx, dialer, logger)
+}

dns/transport/local/local_darwin_nodhcp.go

@@ -0,0 +1,15 @@
+//go:build darwin && !with_dhcp
+
+package local
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/log"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func newDHCPTransport(transportAdapter dns.TransportAdapter, ctx context.Context, dialer N.Dialer, logger log.ContextLogger) dhcpTransport {
+	return nil
+}

dns/transport/local/local_fallback.go

@@ -1,205 +0,0 @@
-package local
-
-import (
-	"context"
-	"errors"
-	"net"
-
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/experimental/libbox/platform"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/service"
-
-	mDNS "github.com/miekg/dns"
-)
-
-func RegisterTransport(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewFallbackTransport)
-}
-
-type FallbackTransport struct {
-	adapter.DNSTransport
-	ctx      context.Context
-	fallback bool
-	resolver net.Resolver
-}
-
-func NewFallbackTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
-	transport, err := NewTransport(ctx, logger, tag, options)
-	if err != nil {
-		return nil, err
-	}
-	return &FallbackTransport{
-		DNSTransport: transport,
-		ctx:          ctx,
-	}, nil
-}
-
-func (f *FallbackTransport) Start(stage adapter.StartStage) error {
-	if stage != adapter.StartStateStart {
-		return nil
-	}
-	platformInterface := service.FromContext[platform.Interface](f.ctx)
-	if platformInterface == nil {
-		return nil
-	}
-	inboundManager := service.FromContext[adapter.InboundManager](f.ctx)
-	for _, inbound := range inboundManager.Inbounds() {
-		if inbound.Type() == C.TypeTun {
-			// platform tun hijacks DNS, so we can only use cgo resolver here
-			f.fallback = true
-			break
-		}
-	}
-	return nil
-}
-
-func (f *FallbackTransport) Close() error {
-	return nil
-}
-
-func (f *FallbackTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	if !f.fallback {
-		return f.DNSTransport.Exchange(ctx, message)
-	}
-	question := message.Question[0]
-	domain := dns.FqdnToDomain(question.Name)
-	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		var network string
-		if question.Qtype == mDNS.TypeA {
-			network = "ip4"
-		} else {
-			network = "ip6"
-		}
-		addresses, err := f.resolver.LookupNetIP(ctx, network, domain)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
-	} else if question.Qtype == mDNS.TypeNS {
-		records, err := f.resolver.LookupNS(ctx, domain)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		response := &mDNS.Msg{
-			MsgHdr: mDNS.MsgHdr{
-				Id:       message.Id,
-				Rcode:    mDNS.RcodeSuccess,
-				Response: true,
-			},
-			Question: []mDNS.Question{question},
-		}
-		for _, record := range records {
-			response.Answer = append(response.Answer, &mDNS.NS{
-				Hdr: mDNS.RR_Header{
-					Name:   question.Name,
-					Rrtype: mDNS.TypeNS,
-					Class:  mDNS.ClassINET,
-					Ttl:    C.DefaultDNSTTL,
-				},
-				Ns: record.Host,
-			})
-		}
-		return response, nil
-	} else if question.Qtype == mDNS.TypeCNAME {
-		cname, err := f.resolver.LookupCNAME(ctx, domain)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		return &mDNS.Msg{
-			MsgHdr: mDNS.MsgHdr{
-				Id:       message.Id,
-				Rcode:    mDNS.RcodeSuccess,
-				Response: true,
-			},
-			Question: []mDNS.Question{question},
-			Answer: []mDNS.RR{
-				&mDNS.CNAME{
-					Hdr: mDNS.RR_Header{
-						Name:   question.Name,
-						Rrtype: mDNS.TypeCNAME,
-						Class:  mDNS.ClassINET,
-						Ttl:    C.DefaultDNSTTL,
-					},
-					Target: cname,
-				},
-			},
-		}, nil
-	} else if question.Qtype == mDNS.TypeTXT {
-		records, err := f.resolver.LookupTXT(ctx, domain)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		return &mDNS.Msg{
-			MsgHdr: mDNS.MsgHdr{
-				Id:       message.Id,
-				Rcode:    mDNS.RcodeSuccess,
-				Response: true,
-			},
-			Question: []mDNS.Question{question},
-			Answer: []mDNS.RR{
-				&mDNS.TXT{
-					Hdr: mDNS.RR_Header{
-						Name:   question.Name,
-						Rrtype: mDNS.TypeCNAME,
-						Class:  mDNS.ClassINET,
-						Ttl:    C.DefaultDNSTTL,
-					},
-					Txt: records,
-				},
-			},
-		}, nil
-	} else if question.Qtype == mDNS.TypeMX {
-		records, err := f.resolver.LookupMX(ctx, domain)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		response := &mDNS.Msg{
-			MsgHdr: mDNS.MsgHdr{
-				Id:       message.Id,
-				Rcode:    mDNS.RcodeSuccess,
-				Response: true,
-			},
-			Question: []mDNS.Question{question},
-		}
-		for _, record := range records {
-			response.Answer = append(response.Answer, &mDNS.MX{
-				Hdr: mDNS.RR_Header{
-					Name:   question.Name,
-					Rrtype: mDNS.TypeA,
-					Class:  mDNS.ClassINET,
-					Ttl:    C.DefaultDNSTTL,
-				},
-				Preference: record.Pref,
-				Mx:         record.Host,
-			})
-		}
-		return response, nil
-	} else {
-		return nil, E.New("only A, AAAA, NS, CNAME, TXT, MX queries are supported on current platform when using TUN, please switch to a fixed DNS server.")
-	}
-}

dns/transport/local/local_resolved.go

@@ -0,0 +1,14 @@
+package local
+
+import (
+	"context"
+
+	mDNS "github.com/miekg/dns"
+)
+
+type ResolvedResolver interface {
+	Start() error
+	Close() error
+	Object() any
+	Exchange(object any, ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error)
+}

dns/transport/local/local_resolved_linux.go

@@ -0,0 +1,150 @@
+package local
+
+import (
+	"context"
+	"os"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/service/resolved"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common/atomic"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+	"github.com/sagernet/sing/service"
+
+	"github.com/godbus/dbus/v5"
+	mDNS "github.com/miekg/dns"
+)
+
+type DBusResolvedResolver struct {
+	logger           logger.ContextLogger
+	interfaceMonitor tun.DefaultInterfaceMonitor
+	systemBus        *dbus.Conn
+	resoledObject    atomic.TypedValue[dbus.BusObject]
+	closeOnce        sync.Once
+}
+
+func NewResolvedResolver(ctx context.Context, logger logger.ContextLogger) (ResolvedResolver, error) {
+	interfaceMonitor := service.FromContext[adapter.NetworkManager](ctx).InterfaceMonitor()
+	if interfaceMonitor == nil {
+		return nil, os.ErrInvalid
+	}
+	systemBus, err := dbus.SystemBus()
+	if err != nil {
+		return nil, err
+	}
+	return &DBusResolvedResolver{
+		logger:           logger,
+		interfaceMonitor: interfaceMonitor,
+		systemBus:        systemBus,
+	}, nil
+}
+
+func (t *DBusResolvedResolver) Start() error {
+	t.updateStatus()
+	err := t.systemBus.BusObject().AddMatchSignal(
+		"org.freedesktop.DBus",
+		"NameOwnerChanged",
+		dbus.WithMatchSender("org.freedesktop.DBus"),
+		dbus.WithMatchArg(0, "org.freedesktop.resolve1.Manager"),
+	).Err
+	if err != nil {
+		return E.Cause(err, "configure resolved restart listener")
+	}
+	go t.loopUpdateStatus()
+	return nil
+}
+
+func (t *DBusResolvedResolver) Close() error {
+	t.closeOnce.Do(func() {
+		if t.systemBus != nil {
+			_ = t.systemBus.Close()
+		}
+	})
+	return nil
+}
+
+func (t *DBusResolvedResolver) Object() any {
+	return t.resoledObject.Load()
+}
+
+func (t *DBusResolvedResolver) Exchange(object any, ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	defaultInterface := t.interfaceMonitor.DefaultInterface()
+	if defaultInterface == nil {
+		return nil, E.New("missing default interface")
+	}
+	question := message.Question[0]
+	call := object.(*dbus.Object).CallWithContext(
+		ctx,
+		"org.freedesktop.resolve1.Manager.ResolveRecord",
+		0,
+		int32(defaultInterface.Index),
+		question.Name,
+		question.Qclass,
+		question.Qtype,
+		uint64(0),
+	)
+	if call.Err != nil {
+		return nil, E.Cause(call.Err, " resolve record via resolved")
+	}
+	var (
+		records  []resolved.ResourceRecord
+		outflags uint64
+	)
+	err := call.Store(&records, &outflags)
+	if err != nil {
+		return nil, err
+	}
+	response := &mDNS.Msg{
+		MsgHdr: mDNS.MsgHdr{
+			Id:                 message.Id,
+			Response:           true,
+			Authoritative:      true,
+			RecursionDesired:   true,
+			RecursionAvailable: true,
+			Rcode:              mDNS.RcodeSuccess,
+		},
+		Question: []mDNS.Question{question},
+	}
+	for _, record := range records {
+		var rr mDNS.RR
+		rr, _, err = mDNS.UnpackRR(record.Data, 0)
+		if err != nil {
+			return nil, E.Cause(err, "unpack resource record")
+		}
+		response.Answer = append(response.Answer, rr)
+	}
+	return response, nil
+}
+
+func (t *DBusResolvedResolver) loopUpdateStatus() {
+	signalChan := make(chan *dbus.Signal, 1)
+	t.systemBus.Signal(signalChan)
+	for signal := range signalChan {
+		var restarted bool
+		if signal.Name == "org.freedesktop.DBus.NameOwnerChanged" {
+			if len(signal.Body) != 3 || signal.Body[2].(string) == "" {
+				continue
+			} else {
+				restarted = true
+			}
+		}
+		if restarted {
+			t.updateStatus()
+		}
+	}
+}
+
+func (t *DBusResolvedResolver) updateStatus() {
+	dbusObject := t.systemBus.Object("org.freedesktop.resolve1", "/org/freedesktop/resolve1")
+	err := dbusObject.Call("org.freedesktop.DBus.Peer.Ping", 0).Err
+	if err != nil {
+		if t.resoledObject.Swap(nil) != nil {
+			t.logger.Debug("systemd-resolved service is gone")
+		}
+		return
+	}
+	t.resoledObject.Store(dbusObject)
+	t.logger.Debug("using systemd-resolved service as resolver")
+}

dns/transport/local/local_resolved_stub.go

@@ -0,0 +1,14 @@
+//go:build !linux
+
+package local
+
+import (
+	"context"
+	"os"
+
+	"github.com/sagernet/sing/common/logger"
+)
+
+func NewResolvedResolver(ctx context.Context, logger logger.ContextLogger) (ResolvedResolver, error) {
+	return nil, os.ErrInvalid
+}

dns/transport/local/local_shared.go

@@ -0,0 +1,161 @@
+package local
+
+import (
+	"context"
+	"math/rand"
+	"time"
+
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	mDNS "github.com/miekg/dns"
+)
+
+func (t *Transport) exchange(ctx context.Context, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	systemConfig := getSystemDNSConfig(t.ctx)
+	if systemConfig.singleRequest || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
+		return t.exchangeSingleRequest(ctx, systemConfig, message, domain)
+	} else {
+		return t.exchangeParallel(ctx, systemConfig, message, domain)
+	}
+}
+
+func (t *Transport) exchangeSingleRequest(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	var lastErr error
+	for _, fqdn := range systemConfig.nameList(domain) {
+		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
+		if err != nil {
+			lastErr = err
+			continue
+		}
+		return response, nil
+	}
+	return nil, lastErr
+}
+
+func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	returned := make(chan struct{})
+	defer close(returned)
+	type queryResult struct {
+		response *mDNS.Msg
+		err      error
+	}
+	results := make(chan queryResult)
+	startRacer := func(ctx context.Context, fqdn string) {
+		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
+		if err == nil {
+			if response.Rcode != mDNS.RcodeSuccess {
+				err = dns.RcodeError(response.Rcode)
+			} else if len(dns.MessageToAddresses(response)) == 0 {
+				err = E.New(fqdn, ": empty result")
+			}
+		}
+		select {
+		case results <- queryResult{response, err}:
+		case <-returned:
+		}
+	}
+	queryCtx, queryCancel := context.WithCancel(ctx)
+	defer queryCancel()
+	var nameCount int
+	for _, fqdn := range systemConfig.nameList(domain) {
+		nameCount++
+		go startRacer(queryCtx, fqdn)
+	}
+	var errors []error
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case result := <-results:
+			if result.err == nil {
+				return result.response, nil
+			}
+			errors = append(errors, result.err)
+			if len(errors) == nameCount {
+				return nil, E.Errors(errors...)
+			}
+		}
+	}
+}
+
+func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn string, message *mDNS.Msg) (*mDNS.Msg, error) {
+	serverOffset := config.serverOffset()
+	sLen := uint32(len(config.servers))
+	var lastErr error
+	for i := 0; i < config.attempts; i++ {
+		for j := uint32(0); j < sLen; j++ {
+			server := config.servers[(serverOffset+j)%sLen]
+			question := message.Question[0]
+			question.Name = fqdn
+			response, err := t.exchangeOne(ctx, M.ParseSocksaddr(server), question, config.timeout, config.useTCP, config.trustAD)
+			if err != nil {
+				lastErr = err
+				continue
+			}
+			return response, nil
+		}
+	}
+	return nil, E.Cause(lastErr, fqdn)
+}
+
+func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
+	if server.Port == 0 {
+		server.Port = 53
+	}
+	var networks []string
+	if useTCP {
+		networks = []string{N.NetworkTCP}
+	} else {
+		networks = []string{N.NetworkUDP, N.NetworkTCP}
+	}
+	request := &mDNS.Msg{
+		MsgHdr: mDNS.MsgHdr{
+			Id:                uint16(rand.Uint32()),
+			RecursionDesired:  true,
+			AuthenticatedData: ad,
+		},
+		Question: []mDNS.Question{question},
+		Compress: true,
+	}
+	request.SetEdns0(maxDNSPacketSize, false)
+	buffer := buf.Get(buf.UDPBufferSize)
+	defer buf.Put(buffer)
+	for _, network := range networks {
+		ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
+		defer cancel()
+		conn, err := t.dialer.DialContext(ctx, network, server)
+		if err != nil {
+			return nil, err
+		}
+		defer conn.Close()
+		if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
+			conn.SetDeadline(deadline)
+		}
+		rawMessage, err := request.PackBuffer(buffer)
+		if err != nil {
+			return nil, E.Cause(err, "pack request")
+		}
+		_, err = conn.Write(rawMessage)
+		if err != nil {
+			return nil, E.Cause(err, "write request")
+		}
+		n, err := conn.Read(buffer)
+		if err != nil {
+			return nil, E.Cause(err, "read response")
+		}
+		var response mDNS.Msg
+		err = response.Unpack(buffer[:n])
+		if err != nil {
+			return nil, E.Cause(err, "unpack response")
+		}
+		if response.Truncated && network == N.NetworkUDP {
+			continue
+		}
+		return &response, nil
+	}
+	panic("unexpected")
+}

dns/transport/local/resolv_darwin_cgo.go

@@ -1,55 +0,0 @@
-//go:build darwin && cgo
-
-package local
-
-/*
-#include <stdlib.h>
-#include <stdio.h>
-#include <resolv.h>
-#include <arpa/inet.h>
-*/
-import "C"
-
-import (
-	"context"
-	"time"
-
-	E "github.com/sagernet/sing/common/exceptions"
-
-	"github.com/miekg/dns"
-)
-
-func dnsReadConfig(_ context.Context, _ string) *dnsConfig {
-	var state C.struct___res_state
-	if C.res_ninit(&state) != 0 {
-		return &dnsConfig{
-			servers:  defaultNS,
-			search:   dnsDefaultSearch(),
-			ndots:    1,
-			timeout:  5 * time.Second,
-			attempts: 2,
-			err:      E.New("libresolv initialization failed"),
-		}
-	}
-	conf := &dnsConfig{
-		ndots:    1,
-		timeout:  5 * time.Second,
-		attempts: int(state.retry),
-	}
-	for i := 0; i < int(state.nscount); i++ {
-		ns := state.nsaddr_list[i]
-		addr := C.inet_ntoa(ns.sin_addr)
-		if addr == nil {
-			continue
-		}
-		conf.servers = append(conf.servers, C.GoString(addr))
-	}
-	for i := 0; ; i++ {
-		search := state.dnsrch[i]
-		if search == nil {
-			break
-		}
-		conf.search = append(conf.search, dns.Fqdn(C.GoString(search)))
-	}
-	return conf
-}

dns/transport/local/resolv_unix.go

@@ -1,4 +1,4 @@
-//go:build !windows && !(darwin && cgo)
+//go:build !windows
 
 package local
 

dns/transport/tls.go

@@ -30,7 +30,7 @@ func RegisterTLS(registry *dns.TransportRegistry) {
 type TLSTransport struct {
 	dns.TransportAdapter
 	logger      logger.ContextLogger
-	dialer      N.Dialer
+	dialer      tls.Dialer
 	serverAddr  M.Socksaddr
 	tlsConfig   tls.Config
 	access      sync.Mutex
@@ -67,7 +67,7 @@ func NewTLSRaw(logger logger.ContextLogger, adapter dns.TransportAdapter, dialer
 	return &TLSTransport{
 		TransportAdapter: adapter,
 		logger:           logger,
-		dialer:           dialer,
+		dialer:           tls.NewDialer(dialer, tlsConfig),
 		serverAddr:       serverAddr,
 		tlsConfig:        tlsConfig,
 	}
@@ -100,15 +100,10 @@ func (t *TLSTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.M
 			return response, nil
 		}
 	}
-	tcpConn, err := t.dialer.DialContext(ctx, N.NetworkTCP, t.serverAddr)
+	tlsConn, err := t.dialer.DialTLSContext(ctx, t.serverAddr)
 	if err != nil {
 		return nil, err
 	}
-	tlsConn, err := tls.ClientHandshake(ctx, tcpConn, t.tlsConfig)
-	if err != nil {
-		tcpConn.Close()
-		return nil, err
-	}
 	return t.exchange(message, &tlsDNSConn{Conn: tlsConn})
 }
 

dns/transport_manager.go

@@ -30,7 +30,7 @@ type TransportManager struct {
 	transportByTag           map[string]adapter.DNSTransport
 	dependByTag              map[string][]string
 	defaultTransport         adapter.DNSTransport
-	defaultTransportFallback adapter.DNSTransport
+	defaultTransportFallback func() (adapter.DNSTransport, error)
 	fakeIPTransport          adapter.FakeIPTransport
 }
 
@@ -45,7 +45,7 @@ func NewTransportManager(logger logger.ContextLogger, registry adapter.DNSTransp
 	}
 }
 
-func (m *TransportManager) Initialize(defaultTransportFallback adapter.DNSTransport) {
+func (m *TransportManager) Initialize(defaultTransportFallback func() (adapter.DNSTransport, error)) {
 	m.defaultTransportFallback = defaultTransportFallback
 }
 
@@ -56,14 +56,27 @@ func (m *TransportManager) Start(stage adapter.StartStage) error {
 	}
 	m.started = true
 	m.stage = stage
-	transports := m.transports
-	m.access.Unlock()
 	if stage == adapter.StartStateStart {
 		if m.defaultTag != "" && m.defaultTransport == nil {
+			m.access.Unlock()
 			return E.New("default DNS server not found: ", m.defaultTag)
 		}
-		return m.startTransports(m.transports)
+		if m.defaultTransport == nil {
+			defaultTransport, err := m.defaultTransportFallback()
+			if err != nil {
+				m.access.Unlock()
+				return E.Cause(err, "default DNS server fallback")
+			}
+			m.transports = append(m.transports, defaultTransport)
+			m.transportByTag[defaultTransport.Tag()] = defaultTransport
+			m.defaultTransport = defaultTransport
+		}
+		transports := m.transports
+		m.access.Unlock()
+		return m.startTransports(transports)
 	} else {
+		transports := m.transports
+		m.access.Unlock()
 		for _, outbound := range transports {
 			err := adapter.LegacyStart(outbound, stage)
 			if err != nil {
@@ -172,11 +185,7 @@ func (m *TransportManager) Transport(tag string) (adapter.DNSTransport, bool) {
 func (m *TransportManager) Default() adapter.DNSTransport {
 	m.access.RLock()
 	defer m.access.RUnlock()
-	if m.defaultTransport != nil {
-		return m.defaultTransport
-	} else {
-		return m.defaultTransportFallback
-	}
+	return m.defaultTransport
 }
 
 func (m *TransportManager) FakeIP() adapter.FakeIPTransport {

docs/changelog.md

@@ -2,11 +2,55 @@
 icon: material/alert-decagram
 ---
 
+#### 1.13.0-alpha.4
+
+* Fixes and improvements
+
+#### 1.12.2
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.3
+
+* Improve `local` DNS server **1**
+* Fixes and improvements
+
+**1**:
+
+On Apple platforms, Windows, and Linux (when using systemd-resolved), 
+`local` DNS server now works with Tun inbound which overrides system DNS servers.
+
+See [Local DNS Server](/configuration/dns/server/local/).
+
+#### 1.13.0-alpha.2
+
+* Add `preferred_by` rule item **1**
+* Fixes and improvements
+
+**1**:
+
+The new `preferred_by` routing rule item allows you to
+match preferred domains and addresses for specific outbounds.
+
+See [Route Rule](/configuration/route/rule/#preferred_by).
+
+#### 1.13.0-alpha.1
+
+* Add interface address rule items **1**
+* Fixes and improvements
+
+**1**:
+
+New interface address rules allow you to dynamically adjust rules based on your network environment.
+
+See [Route Rule](/configuration/route/rule/), [DNS Route Rule](/configuration/dns/rule/)
+and [Headless Rule](/configuration/rule-set/headless-rule/).
+
 #### 1.12.1
 
 * Fixes and improvements
 
-#### 1.12.0
+### 1.12.0
 
 * Refactor DNS servers **1**
 * Add domain resolver options**2**
@@ -157,7 +201,7 @@ We continue to experience issues updating our sing-box apps on the App Store and
 Until we rewrite and resubmit the apps, they are considered irrecoverable. 
 Therefore, after this release, we will not be repeating this notice unless there is new information.
 
-### 1.11.15
+#### 1.11.15
 
 * Fixes and improvements
 
@@ -173,7 +217,7 @@ violated the rules (TestFlight users are not affected)._
 
 We have significantly improved the performance of tun inbound on Apple platforms, especially in the gVisor stack.
 
-### 1.11.14
+#### 1.11.14
 
 * Fixes and improvements
 
@@ -223,7 +267,7 @@ You can now choose what the DERP home page shows, just like with derper's `-home
 
 See [DERP](/configuration/service/derp/#home).
 
-### 1.11.13
+#### 1.11.13
 
 * Fixes and improvements
 
@@ -261,7 +305,7 @@ SSM API service is a RESTful API server for managing Shadowsocks servers.
 
 See [SSM API Service](/configuration/service/ssm-api/).
 
-### 1.11.11
+#### 1.11.11
 
 * Fixes and improvements
 
@@ -293,7 +337,7 @@ You can now set `bind_interface`, `routing_mark` and `reuse_addr` in Listen Fiel
 
 See [Listen Fields](/configuration/shared/listen/).
 
-### 1.11.10
+#### 1.11.10
 
 * Undeprecate the `block` outbound **1**
 * Fixes and improvements
@@ -311,7 +355,7 @@ violated the rules (TestFlight users are not affected)._
 * Update quic-go to v0.51.0
 * Fixes and improvements
 
-### 1.11.9
+#### 1.11.9
 
 * Fixes and improvements
 
@@ -322,7 +366,7 @@ violated the rules (TestFlight users are not affected)._
 
 * Fixes and improvements
 
-### 1.11.8
+#### 1.11.8
 
 * Improve `auto_redirect` **1**
 * Fixes and improvements
@@ -339,7 +383,7 @@ violated the rules (TestFlight users are not affected)._
 
 * Fixes and improvements
 
-### 1.11.7
+#### 1.11.7
 
 * Fixes and improvements
 
@@ -355,7 +399,7 @@ violated the rules (TestFlight users are not affected)._
 Now `auto_redirect` fixes compatibility issues between tun and Docker bridge networks,
 see [Tun](/configuration/inbound/tun/#auto_redirect).
 
-### 1.11.6
+#### 1.11.6
 
 * Fixes and improvements
 
@@ -396,7 +440,7 @@ See [Protocol Sniff](/configuration/route/sniff/).
 
 See [Dial Fields](/configuration/shared/dial/#domain_resolver).
 
-### 1.11.5
+#### 1.11.5
 
 * Fixes and improvements
 
@@ -412,7 +456,7 @@ violated the rules (TestFlight users are not affected)._
 
 See [DNS Rule Action](/configuration/dns/rule_action/#predefined).
 
-### 1.11.4
+#### 1.11.4
 
 * Fixes and improvements
 
@@ -468,7 +512,7 @@ Due to maintenance difficulties, sing-box 1.12.0 requires at least Go 1.23 to co
 
 For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches from [MetaCubeX/go](https://github.com/MetaCubeX/go).
 
-### 1.11.3
+#### 1.11.3
 
 * Fixes and improvements
 
@@ -479,7 +523,7 @@ process._
 
 * Fixes and improvements
 
-### 1.11.1
+#### 1.11.1
 
 * Fixes and improvements
 
@@ -658,7 +702,7 @@ See [Hysteria2](/configuration/outbound/hysteria2/).
 
 When `up_mbps` and `down_mbps` are set, `ignore_client_bandwidth` instead denies clients from using BBR CC.
 
-### 1.10.7
+#### 1.10.7
 
 * Fixes and improvements
 
@@ -753,7 +797,7 @@ and the old outbound will be removed in sing-box 1.13.0.
 See [Endpoint](/configuration/endpoint/), [WireGuard Endpoint](/configuration/endpoint/wireguard/)
 and [Migrate WireGuard outbound fields to route options](/migration/#migrate-wireguard-outbound-to-endpoint).
 
-### 1.10.2
+#### 1.10.2
 
 * Add deprecated warnings
 * Fix proxying websocket connections in HTTP/mixed inbounds
@@ -890,7 +934,7 @@ See [Rule Action](/configuration/route/rule_action/).
 * Update quic-go to v0.48.0
 * Fixes and improvements
 
-### 1.10.1
+#### 1.10.1
 
 * Fixes and improvements
 

docs/configuration/dns/rule.md

@@ -2,6 +2,12 @@
 icon: material/alert-decagram
 ---
 
+!!! quote "Changes in sing-box 1.13.0"
+
+    :material-plus: [interface_address](#interface_address)  
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)
+
 !!! quote "Changes in sing-box 1.12.0"
 
     :material-plus: [ip_accept_any](#ip_accept_any)  
@@ -130,6 +136,19 @@ icon: material/alert-decagram
         ],
         "network_is_expensive": false,
         "network_is_constrained": false,
+        "interface_address": {
+          "en0": [
+            "2000::/3"
+          ]
+        },
+        "network_interface_address": {
+          "wifi": [
+            "2000::/3"
+          ]
+        },
+        "default_interface_address": [
+          "2000::/3"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
@@ -359,6 +378,36 @@ such as Cellular or a Personal Hotspot (on Apple platforms).
 
 Match if network is in Low Data Mode.
 
+#### interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Match interface address.
+
+#### network_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported in graphical clients on Android and Apple platforms.
+
+Matches network interface (same values as `network_type`) address.
+
+#### default_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Match default interface address.
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/dns/rule.zh.md

@@ -2,6 +2,12 @@
 icon: material/alert-decagram
 ---
 
+!!! quote "sing-box 1.13.0 中的更改"
+
+    :material-plus: [interface_address](#interface_address)  
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)
+
 !!! quote "sing-box 1.12.0 中的更改"
 
     :material-plus: [ip_accept_any](#ip_accept_any)  
@@ -130,6 +136,19 @@ icon: material/alert-decagram
         ],
         "network_is_expensive": false,
         "network_is_constrained": false,
+        "interface_address": {
+          "en0": [
+            "2000::/3"
+          ]
+        },
+        "network_interface_address": {
+          "wifi": [
+            "2000::/3"
+          ]
+        },
+        "default_interface_address": [
+          "2000::/3"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
@@ -358,6 +377,36 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 匹配如果网络在低数据模式下。
 
+#### interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS.
+
+匹配接口地址。
+
+#### network_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅在 Android 与 Apple 平台图形客户端中支持。
+
+匹配网络接口（可用值同 `network_type`）地址。
+
+#### default_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS.
+
+匹配默认接口地址。
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/dns/server/local.md

@@ -2,6 +2,10 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.13.0"
+
+    :material-plus: [prefer_go](#prefer_go)  
+
 !!! question "Since sing-box 1.12.0"
 
 # Local
@@ -15,6 +19,7 @@ icon: material/new-box
       {
         "type": "local",
         "tag": "",
+        "prefer_go": false
 
         // Dial Fields
       }
@@ -24,10 +29,33 @@ icon: material/new-box
 ```
 
 !!! info "Difference from legacy local server"
-    
+
     * The old legacy local server only handles IP requests; the new one handles all types of requests and supports concurrent for IP requests.
     * The old local server uses default outbound by default unless detour is specified; the new one uses dialer just like outbound, which is equivalent to using an empty direct outbound by default.
 
+### Fields
+
+#### prefer_go
+
+!!! question "Since sing-box 1.13.0"
+
+When enabled, `local` DNS server will resolve DNS by dialing itself whenever possible.
+
+Specifically, it disables following behaviors which was added as features in sing-box 1.13.0:
+
+1. On Apple platforms: Attempt to resolve A/AAAA requests using `getaddrinfo` in NetworkExtension.
+2. On Linux: Resolve through `systemd-resolvd`'s DBus interface when available.
+
+As a sole exception, it cannot disable the following behavior:
+
+1. In the Android graphical client,
+`local` will always resolve DNS through the platform interface,
+as there is no other way to obtain upstream DNS servers;
+On devices running Android versions lower than 10, this interface can only resolve A/AAAA requests.
+
+2. On macOS, `local` will try DHCP first in Network Extension, since DHCP respects DIal Fields,
+it will not be disabled by `prefer_go`.
+
 ### Dial Fields
 
 See [Dial Fields](/configuration/shared/dial/) for details.

docs/configuration/endpoint/index.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! question "Since sing-box 1.11.0"
 
 # Endpoint

docs/configuration/endpoint/index.zh.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! question "自 sing-box 1.11.0 起"
 
 # 端点

docs/configuration/endpoint/wireguard.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! question "Since sing-box 1.11.0"
 
 ### Structure

docs/configuration/endpoint/wireguard.zh.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! question "自 sing-box 1.11.0 起"
 
 ### 结构

docs/configuration/outbound/hysteria2.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! quote "Changes in sing-box 1.11.0"
 
     :material-plus: [server_ports](#server_ports)  

docs/configuration/outbound/hysteria2.zh.md

@@ -1,7 +1,3 @@
----
-icon: material/new-box
----
-
 !!! quote "sing-box 1.11.0 中的更改"
 
     :material-plus: [server_ports](#server_ports)  

docs/configuration/route/rule.md

@@ -2,6 +2,13 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.13.0"
+
+    :material-plus: [interface_address](#interface_address)  
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)  
+    :material-plus: [preferred_by](#preferred_by)
+
 !!! quote "Changes in sing-box 1.11.0"
 
     :material-plus: [action](#action)  
@@ -128,12 +135,29 @@ icon: material/new-box
         ],
         "network_is_expensive": false,
         "network_is_constrained": false,
+        "interface_address": {
+          "en0": [
+            "2000::/3"
+          ]
+        },
+        "network_interface_address": {
+          "wifi": [
+            "2000::/3"
+          ]
+        },
+        "default_interface_address": [
+          "2000::/3"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
         "wifi_bssid": [
           "00:00:00:00:00:00"
         ],
+        "preferred_by": [
+          "tailscale",
+          "wireguard"
+        ],
         "rule_set": [
           "geoip-cn",
           "geosite-cn"
@@ -363,6 +387,36 @@ such as Cellular or a Personal Hotspot (on Apple platforms).
 
 Match if network is in Low Data Mode.
 
+#### interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Match interface address.
+
+#### network_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported in graphical clients on Android and Apple platforms.
+
+Matches network interface (same values as `network_type`) address.
+
+#### default_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Match default interface address.
+
 #### wifi_ssid
 
 !!! quote ""
@@ -379,6 +433,17 @@ Match WiFi SSID.
 
 Match WiFi BSSID.
 
+#### preferred_by
+
+!!! question "Since sing-box 1.13.0"
+
+Match specified outbounds' preferred routes.
+
+| Type        | Match                                         |
+|-------------|-----------------------------------------------|
+| `tailscale` | Match MagicDNS domains and peers' allowed IPs |
+| `wireguard` | Match peers's allowed IPs                     |
+
 #### rule_set
 
 !!! question "Since sing-box 1.8.0"

docs/configuration/route/rule.zh.md

@@ -2,6 +2,13 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.13.0 中的更改"
+
+    :material-plus: [interface_address](#interface_address)  
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)  
+    :material-plus: [preferred_by](#preferred_by)
+
 !!! quote "sing-box 1.11.0 中的更改"
 
     :material-plus: [action](#action)  
@@ -125,12 +132,29 @@ icon: material/new-box
         ],
         "network_is_expensive": false,
         "network_is_constrained": false,
+        "interface_address": {
+          "en0": [
+            "2000::/3"
+          ]
+        },
+        "network_interface_address": {
+          "wifi": [
+            "2000::/3"
+          ]
+        },
+        "default_interface_address": [
+          "2000::/3"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
         "wifi_bssid": [
           "00:00:00:00:00:00"
         ],
+        "preferred_by": [
+          "tailscale",
+          "wireguard"
+        ],
         "rule_set": [
           "geoip-cn",
           "geosite-cn"
@@ -337,7 +361,7 @@ icon: material/new-box
 
 匹配网络类型。
 
-Available values: `wifi`, `cellular`, `ethernet` and `other`.
+可用值: `wifi`, `cellular`, `ethernet` and `other`.
 
 #### network_is_expensive
 
@@ -360,6 +384,36 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 匹配如果网络在低数据模式下。
 
+#### interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS.
+
+匹配接口地址。
+
+#### network_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅在 Android 与 Apple 平台图形客户端中支持。
+
+匹配网络接口（可用值同 `network_type`）地址。
+
+#### default_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS.
+
+匹配默认接口地址。
+
 #### wifi_ssid
 
 !!! quote ""
@@ -376,6 +430,17 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 匹配 WiFi BSSID。
 
+#### preferred_by
+
+!!! question "自 sing-box 1.13.0 起"
+
+匹配制定出站的首选路由。
+
+| 类型          | 匹配                             |
+|-------------|--------------------------------|
+| `tailscale` | 匹配 MagicDNS 域名和对端的 allowed IPs |
+| `wireguard` | 匹配对端的 allowed IPs              |
+
 #### rule_set
 
 !!! question "自 sing-box 1.8.0 起"

docs/configuration/rule-set/headless-rule.md

@@ -2,6 +2,11 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.13.0"
+
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)
+
 !!! quote "Changes in sing-box 1.11.0"
 
     :material-plus: [network_type](#network_type)  
@@ -78,6 +83,14 @@ icon: material/new-box
       ],
       "network_is_expensive": false,
       "network_is_constrained": false,
+      "network_interface_address": {
+        "wifi": [
+          "2000::/3"
+        ]
+      },
+      "default_interface_address": [
+        "2000::/3"
+      ],
       "wifi_ssid": [
         "My WIFI"
       ],
@@ -225,6 +238,26 @@ such as Cellular or a Personal Hotspot (on Apple platforms).
 
 Match if network is in Low Data Mode.
 
+#### network_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported in graphical clients on Android and Apple platforms.
+
+Matches network interface (same values as `network_type`) address.
+
+#### default_interface_address
+
+!!! question "Since sing-box 1.13.0"
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Match default interface address.
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/rule-set/headless-rule.zh.md

@@ -2,6 +2,11 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.13.0 中的更改"
+
+    :material-plus: [network_interface_address](#network_interface_address)  
+    :material-plus: [default_interface_address](#default_interface_address)
+
 !!! quote "sing-box 1.11.0 中的更改"
 
     :material-plus: [network_type](#network_type)  
@@ -78,6 +83,14 @@ icon: material/new-box
       ],
       "network_is_expensive": false,
       "network_is_constrained": false,
+      "network_interface_address": {
+        "wifi": [
+          "2000::/3"
+        ]
+      },
+      "default_interface_address": [
+        "2000::/3"
+      ],
       "wifi_ssid": [
         "My WIFI"
       ],
@@ -221,6 +234,26 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 匹配如果网络在低数据模式下。
 
+#### network_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅在 Android 与 Apple 平台图形客户端中支持。
+
+匹配网络接口（可用值同 `network_type`）地址。
+
+#### default_interface_address
+
+!!! question "自 sing-box 1.13.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS.
+
+匹配默认接口地址。
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/rule-set/source-format.md

@@ -2,6 +2,10 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.13.0"
+
+    :material-plus: version `4`
+
 !!! quote "Changes in sing-box 1.11.0"
 
     :material-plus: version `3`
@@ -36,6 +40,7 @@ Version of rule-set.
 * 1: sing-box 1.8.0: Initial rule-set version.
 * 2: sing-box 1.10.0: Optimized memory usages of `domain_suffix` rules in binary rule-sets.
 * 3: sing-box 1.11.0: Added `network_type`, `network_is_expensive` and `network_is_constrainted` rule items.
+* 4: sing-box 1.13.0: Added `network_interface_address` and `default_interface_address` rule items.
 
 #### rules
 

docs/configuration/rule-set/source-format.zh.md

@@ -2,6 +2,10 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.13.0 中的更改"
+
+    :material-plus: version `4`
+
 !!! quote "sing-box 1.11.0 中的更改"
 
     :material-plus: version `3`
@@ -36,6 +40,7 @@ icon: material/new-box
 * 1: sing-box 1.8.0: 初始规则集版本。
 * 2: sing-box 1.10.0: 优化了二进制规则集中 `domain_suffix` 规则的内存使用。
 * 3: sing-box 1.11.0: 添加了 `network_type`、 `network_is_expensive` 和 `network_is_constrainted` 规则项。
+* 4: sing-box 1.13.0: 添加了 `network_interface_address` 和 `default_interface_address` 规则项。
 
 #### rules
 

experimental/clashapi/cache.go

@@ -14,6 +14,7 @@ import (
 func cacheRouter(ctx context.Context) http.Handler {
 	r := chi.NewRouter()
 	r.Post("/fakeip/flush", flushFakeip(ctx))
+	r.Post("/dns/flush", flushDNS(ctx))
 	return r
 }
 
@@ -31,3 +32,13 @@ func flushFakeip(ctx context.Context) func(w http.ResponseWriter, r *http.Reques
 		render.NoContent(w, r)
 	}
 }
+
+func flushDNS(ctx context.Context) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		dnsRouter := service.FromContext[adapter.DNSRouter](ctx)
+		if dnsRouter != nil {
+			dnsRouter.ClearCache()
+		}
+		render.NoContent(w, r)
+	}
+}

go.mod

@@ -34,7 +34,7 @@ require (
 	github.com/sagernet/sing-shadowsocks2 v0.2.1
 	github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11
 	github.com/sagernet/sing-tun v0.7.0-beta.1
-	github.com/sagernet/sing-vmess v0.2.6
+	github.com/sagernet/sing-vmess v0.2.7
 	github.com/sagernet/smux v1.5.34-mod.2
 	github.com/sagernet/tailscale v1.80.3-mod.5
 	github.com/sagernet/wireguard-go v0.0.1-beta.7

go.sum

@@ -181,8 +181,8 @@ github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 h1:tK+75
 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11/go.mod h1:sWqKnGlMipCHaGsw1sTTlimyUpgzP4WP3pjhCsYt9oA=
 github.com/sagernet/sing-tun v0.7.0-beta.1 h1:mBIFXYAnGO5ey/HcCYanqnBx61E7yF8zTFGRZonGYmY=
 github.com/sagernet/sing-tun v0.7.0-beta.1/go.mod h1:AHJuRrLbNRJuivuFZ2VhXwDj4ViYp14szG5EkkKAqRQ=
-github.com/sagernet/sing-vmess v0.2.6 h1:1c4dGzeGy0kpBXXrT1sgiMZtHhdJylIT8eWrGhJYZec=
-github.com/sagernet/sing-vmess v0.2.6/go.mod h1:5aYoOtYksAyS0NXDm0qKeTYW1yoE1bJVcv+XLcVoyJs=
+github.com/sagernet/sing-vmess v0.2.7 h1:2ee+9kO0xW5P4mfe6TYVWf9VtY8k1JhNysBqsiYj0sk=
+github.com/sagernet/sing-vmess v0.2.7/go.mod h1:5aYoOtYksAyS0NXDm0qKeTYW1yoE1bJVcv+XLcVoyJs=
 github.com/sagernet/smux v1.5.34-mod.2 h1:gkmBjIjlJ2zQKpLigOkFur5kBKdV6bNRoFu2WkltRQ4=
 github.com/sagernet/smux v1.5.34-mod.2/go.mod h1:0KW0+R+ycvA2INW4gbsd7BNyg+HEfLIAxa5N02/28Zc=
 github.com/sagernet/tailscale v1.80.3-mod.5 h1:7V7z+p2C//TGtff20pPnDCt3qP6uFyY62peJoKF9z/A=

option/dns.go

@@ -190,7 +190,7 @@ func (o *DNSServerOptions) Upgrade(ctx context.Context) error {
 		}
 	}
 	remoteOptions := RemoteDNSServerOptions{
-		LocalDNSServerOptions: LocalDNSServerOptions{
+		RawLocalDNSServerOptions: RawLocalDNSServerOptions{
 			DialerOptions: DialerOptions{
 				Detour: options.Detour,
 				DomainResolver: &DomainResolveOptions{
@@ -211,7 +211,9 @@ func (o *DNSServerOptions) Upgrade(ctx context.Context) error {
 	switch serverType {
 	case C.DNSTypeLocal:
 		o.Type = C.DNSTypeLocal
-		o.Options = &remoteOptions.LocalDNSServerOptions
+		o.Options = &LocalDNSServerOptions{
+			RawLocalDNSServerOptions: remoteOptions.RawLocalDNSServerOptions,
+		}
 	case C.DNSTypeUDP:
 		o.Type = C.DNSTypeUDP
 		o.Options = &remoteOptions
@@ -363,7 +365,7 @@ type HostsDNSServerOptions struct {
 	Predefined *badjson.TypedMap[string, badoption.Listable[netip.Addr]] `json:"predefined,omitempty"`
 }
 
-type LocalDNSServerOptions struct {
+type RawLocalDNSServerOptions struct {
 	DialerOptions
 	Legacy              bool           `json:"-"`
 	LegacyStrategy      DomainStrategy `json:"-"`
@@ -371,8 +373,13 @@ type LocalDNSServerOptions struct {
 	LegacyClientSubnet  netip.Prefix   `json:"-"`
 }
 
+type LocalDNSServerOptions struct {
+	RawLocalDNSServerOptions
+	PreferGo bool `json:"prefer_go,omitempty"`
+}
+
 type RemoteDNSServerOptions struct {
-	LocalDNSServerOptions
+	RawLocalDNSServerOptions
 	DNSServerAddressOptions
 	LegacyAddressResolver      string             `json:"-"`
 	LegacyAddressStrategy      DomainStrategy     `json:"-"`

option/rule.go

@@ -67,42 +67,46 @@ func (r Rule) IsValid() bool {
 }
 
 type RawDefaultRule struct {
-	Inbound                  badoption.Listable[string]        `json:"inbound,omitempty"`
-	IPVersion                int                               `json:"ip_version,omitempty"`
-	Network                  badoption.Listable[string]        `json:"network,omitempty"`
-	AuthUser                 badoption.Listable[string]        `json:"auth_user,omitempty"`
-	Protocol                 badoption.Listable[string]        `json:"protocol,omitempty"`
-	Client                   badoption.Listable[string]        `json:"client,omitempty"`
-	Domain                   badoption.Listable[string]        `json:"domain,omitempty"`
-	DomainSuffix             badoption.Listable[string]        `json:"domain_suffix,omitempty"`
-	DomainKeyword            badoption.Listable[string]        `json:"domain_keyword,omitempty"`
-	DomainRegex              badoption.Listable[string]        `json:"domain_regex,omitempty"`
-	Geosite                  badoption.Listable[string]        `json:"geosite,omitempty"`
-	SourceGeoIP              badoption.Listable[string]        `json:"source_geoip,omitempty"`
-	GeoIP                    badoption.Listable[string]        `json:"geoip,omitempty"`
-	SourceIPCIDR             badoption.Listable[string]        `json:"source_ip_cidr,omitempty"`
-	SourceIPIsPrivate        bool                              `json:"source_ip_is_private,omitempty"`
-	IPCIDR                   badoption.Listable[string]        `json:"ip_cidr,omitempty"`
-	IPIsPrivate              bool                              `json:"ip_is_private,omitempty"`
-	SourcePort               badoption.Listable[uint16]        `json:"source_port,omitempty"`
-	SourcePortRange          badoption.Listable[string]        `json:"source_port_range,omitempty"`
-	Port                     badoption.Listable[uint16]        `json:"port,omitempty"`
-	PortRange                badoption.Listable[string]        `json:"port_range,omitempty"`
-	ProcessName              badoption.Listable[string]        `json:"process_name,omitempty"`
-	ProcessPath              badoption.Listable[string]        `json:"process_path,omitempty"`
-	ProcessPathRegex         badoption.Listable[string]        `json:"process_path_regex,omitempty"`
-	PackageName              badoption.Listable[string]        `json:"package_name,omitempty"`
-	User                     badoption.Listable[string]        `json:"user,omitempty"`
-	UserID                   badoption.Listable[int32]         `json:"user_id,omitempty"`
-	ClashMode                string                            `json:"clash_mode,omitempty"`
-	NetworkType              badoption.Listable[InterfaceType] `json:"network_type,omitempty"`
-	NetworkIsExpensive       bool                              `json:"network_is_expensive,omitempty"`
-	NetworkIsConstrained     bool                              `json:"network_is_constrained,omitempty"`
-	WIFISSID                 badoption.Listable[string]        `json:"wifi_ssid,omitempty"`
-	WIFIBSSID                badoption.Listable[string]        `json:"wifi_bssid,omitempty"`
-	RuleSet                  badoption.Listable[string]        `json:"rule_set,omitempty"`
-	RuleSetIPCIDRMatchSource bool                              `json:"rule_set_ip_cidr_match_source,omitempty"`
-	Invert                   bool                              `json:"invert,omitempty"`
+	Inbound                  badoption.Listable[string]                                                  `json:"inbound,omitempty"`
+	IPVersion                int                                                                         `json:"ip_version,omitempty"`
+	Network                  badoption.Listable[string]                                                  `json:"network,omitempty"`
+	AuthUser                 badoption.Listable[string]                                                  `json:"auth_user,omitempty"`
+	Protocol                 badoption.Listable[string]                                                  `json:"protocol,omitempty"`
+	Client                   badoption.Listable[string]                                                  `json:"client,omitempty"`
+	Domain                   badoption.Listable[string]                                                  `json:"domain,omitempty"`
+	DomainSuffix             badoption.Listable[string]                                                  `json:"domain_suffix,omitempty"`
+	DomainKeyword            badoption.Listable[string]                                                  `json:"domain_keyword,omitempty"`
+	DomainRegex              badoption.Listable[string]                                                  `json:"domain_regex,omitempty"`
+	Geosite                  badoption.Listable[string]                                                  `json:"geosite,omitempty"`
+	SourceGeoIP              badoption.Listable[string]                                                  `json:"source_geoip,omitempty"`
+	GeoIP                    badoption.Listable[string]                                                  `json:"geoip,omitempty"`
+	SourceIPCIDR             badoption.Listable[string]                                                  `json:"source_ip_cidr,omitempty"`
+	SourceIPIsPrivate        bool                                                                        `json:"source_ip_is_private,omitempty"`
+	IPCIDR                   badoption.Listable[string]                                                  `json:"ip_cidr,omitempty"`
+	IPIsPrivate              bool                                                                        `json:"ip_is_private,omitempty"`
+	SourcePort               badoption.Listable[uint16]                                                  `json:"source_port,omitempty"`
+	SourcePortRange          badoption.Listable[string]                                                  `json:"source_port_range,omitempty"`
+	Port                     badoption.Listable[uint16]                                                  `json:"port,omitempty"`
+	PortRange                badoption.Listable[string]                                                  `json:"port_range,omitempty"`
+	ProcessName              badoption.Listable[string]                                                  `json:"process_name,omitempty"`
+	ProcessPath              badoption.Listable[string]                                                  `json:"process_path,omitempty"`
+	ProcessPathRegex         badoption.Listable[string]                                                  `json:"process_path_regex,omitempty"`
+	PackageName              badoption.Listable[string]                                                  `json:"package_name,omitempty"`
+	User                     badoption.Listable[string]                                                  `json:"user,omitempty"`
+	UserID                   badoption.Listable[int32]                                                   `json:"user_id,omitempty"`
+	ClashMode                string                                                                      `json:"clash_mode,omitempty"`
+	NetworkType              badoption.Listable[InterfaceType]                                           `json:"network_type,omitempty"`
+	NetworkIsExpensive       bool                                                                        `json:"network_is_expensive,omitempty"`
+	NetworkIsConstrained     bool                                                                        `json:"network_is_constrained,omitempty"`
+	WIFISSID                 badoption.Listable[string]                                                  `json:"wifi_ssid,omitempty"`
+	WIFIBSSID                badoption.Listable[string]                                                  `json:"wifi_bssid,omitempty"`
+	InterfaceAddress         *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]]        `json:"interface_address,omitempty"`
+	NetworkInterfaceAddress  *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"`
+	DefaultInterfaceAddress  badoption.Listable[*badoption.Prefixable]                                   `json:"default_interface_address,omitempty"`
+	PreferredBy              badoption.Listable[string]                                                  `json:"preferred_by,omitempty"`
+	RuleSet                  badoption.Listable[string]                                                  `json:"rule_set,omitempty"`
+	RuleSetIPCIDRMatchSource bool                                                                        `json:"rule_set_ip_cidr_match_source,omitempty"`
+	Invert                   bool                                                                        `json:"invert,omitempty"`
 
 	// Deprecated: renamed to rule_set_ip_cidr_match_source
 	Deprecated_RulesetIPCIDRMatchSource bool `json:"rule_set_ipcidr_match_source,omitempty"`

option/rule_dns.go

@@ -68,45 +68,48 @@ func (r DNSRule) IsValid() bool {
 }
 
 type RawDefaultDNSRule struct {
-	Inbound                  badoption.Listable[string]        `json:"inbound,omitempty"`
-	IPVersion                int                               `json:"ip_version,omitempty"`
-	QueryType                badoption.Listable[DNSQueryType]  `json:"query_type,omitempty"`
-	Network                  badoption.Listable[string]        `json:"network,omitempty"`
-	AuthUser                 badoption.Listable[string]        `json:"auth_user,omitempty"`
-	Protocol                 badoption.Listable[string]        `json:"protocol,omitempty"`
-	Domain                   badoption.Listable[string]        `json:"domain,omitempty"`
-	DomainSuffix             badoption.Listable[string]        `json:"domain_suffix,omitempty"`
-	DomainKeyword            badoption.Listable[string]        `json:"domain_keyword,omitempty"`
-	DomainRegex              badoption.Listable[string]        `json:"domain_regex,omitempty"`
-	Geosite                  badoption.Listable[string]        `json:"geosite,omitempty"`
-	SourceGeoIP              badoption.Listable[string]        `json:"source_geoip,omitempty"`
-	GeoIP                    badoption.Listable[string]        `json:"geoip,omitempty"`
-	IPCIDR                   badoption.Listable[string]        `json:"ip_cidr,omitempty"`
-	IPIsPrivate              bool                              `json:"ip_is_private,omitempty"`
-	IPAcceptAny              bool                              `json:"ip_accept_any,omitempty"`
-	SourceIPCIDR             badoption.Listable[string]        `json:"source_ip_cidr,omitempty"`
-	SourceIPIsPrivate        bool                              `json:"source_ip_is_private,omitempty"`
-	SourcePort               badoption.Listable[uint16]        `json:"source_port,omitempty"`
-	SourcePortRange          badoption.Listable[string]        `json:"source_port_range,omitempty"`
-	Port                     badoption.Listable[uint16]        `json:"port,omitempty"`
-	PortRange                badoption.Listable[string]        `json:"port_range,omitempty"`
-	ProcessName              badoption.Listable[string]        `json:"process_name,omitempty"`
-	ProcessPath              badoption.Listable[string]        `json:"process_path,omitempty"`
-	ProcessPathRegex         badoption.Listable[string]        `json:"process_path_regex,omitempty"`
-	PackageName              badoption.Listable[string]        `json:"package_name,omitempty"`
-	User                     badoption.Listable[string]        `json:"user,omitempty"`
-	UserID                   badoption.Listable[int32]         `json:"user_id,omitempty"`
-	Outbound                 badoption.Listable[string]        `json:"outbound,omitempty"`
-	ClashMode                string                            `json:"clash_mode,omitempty"`
-	NetworkType              badoption.Listable[InterfaceType] `json:"network_type,omitempty"`
-	NetworkIsExpensive       bool                              `json:"network_is_expensive,omitempty"`
-	NetworkIsConstrained     bool                              `json:"network_is_constrained,omitempty"`
-	WIFISSID                 badoption.Listable[string]        `json:"wifi_ssid,omitempty"`
-	WIFIBSSID                badoption.Listable[string]        `json:"wifi_bssid,omitempty"`
-	RuleSet                  badoption.Listable[string]        `json:"rule_set,omitempty"`
-	RuleSetIPCIDRMatchSource bool                              `json:"rule_set_ip_cidr_match_source,omitempty"`
-	RuleSetIPCIDRAcceptEmpty bool                              `json:"rule_set_ip_cidr_accept_empty,omitempty"`
-	Invert                   bool                              `json:"invert,omitempty"`
+	Inbound                  badoption.Listable[string]                                                  `json:"inbound,omitempty"`
+	IPVersion                int                                                                         `json:"ip_version,omitempty"`
+	QueryType                badoption.Listable[DNSQueryType]                                            `json:"query_type,omitempty"`
+	Network                  badoption.Listable[string]                                                  `json:"network,omitempty"`
+	AuthUser                 badoption.Listable[string]                                                  `json:"auth_user,omitempty"`
+	Protocol                 badoption.Listable[string]                                                  `json:"protocol,omitempty"`
+	Domain                   badoption.Listable[string]                                                  `json:"domain,omitempty"`
+	DomainSuffix             badoption.Listable[string]                                                  `json:"domain_suffix,omitempty"`
+	DomainKeyword            badoption.Listable[string]                                                  `json:"domain_keyword,omitempty"`
+	DomainRegex              badoption.Listable[string]                                                  `json:"domain_regex,omitempty"`
+	Geosite                  badoption.Listable[string]                                                  `json:"geosite,omitempty"`
+	SourceGeoIP              badoption.Listable[string]                                                  `json:"source_geoip,omitempty"`
+	GeoIP                    badoption.Listable[string]                                                  `json:"geoip,omitempty"`
+	IPCIDR                   badoption.Listable[string]                                                  `json:"ip_cidr,omitempty"`
+	IPIsPrivate              bool                                                                        `json:"ip_is_private,omitempty"`
+	IPAcceptAny              bool                                                                        `json:"ip_accept_any,omitempty"`
+	SourceIPCIDR             badoption.Listable[string]                                                  `json:"source_ip_cidr,omitempty"`
+	SourceIPIsPrivate        bool                                                                        `json:"source_ip_is_private,omitempty"`
+	SourcePort               badoption.Listable[uint16]                                                  `json:"source_port,omitempty"`
+	SourcePortRange          badoption.Listable[string]                                                  `json:"source_port_range,omitempty"`
+	Port                     badoption.Listable[uint16]                                                  `json:"port,omitempty"`
+	PortRange                badoption.Listable[string]                                                  `json:"port_range,omitempty"`
+	ProcessName              badoption.Listable[string]                                                  `json:"process_name,omitempty"`
+	ProcessPath              badoption.Listable[string]                                                  `json:"process_path,omitempty"`
+	ProcessPathRegex         badoption.Listable[string]                                                  `json:"process_path_regex,omitempty"`
+	PackageName              badoption.Listable[string]                                                  `json:"package_name,omitempty"`
+	User                     badoption.Listable[string]                                                  `json:"user,omitempty"`
+	UserID                   badoption.Listable[int32]                                                   `json:"user_id,omitempty"`
+	Outbound                 badoption.Listable[string]                                                  `json:"outbound,omitempty"`
+	ClashMode                string                                                                      `json:"clash_mode,omitempty"`
+	NetworkType              badoption.Listable[InterfaceType]                                           `json:"network_type,omitempty"`
+	NetworkIsExpensive       bool                                                                        `json:"network_is_expensive,omitempty"`
+	NetworkIsConstrained     bool                                                                        `json:"network_is_constrained,omitempty"`
+	WIFISSID                 badoption.Listable[string]                                                  `json:"wifi_ssid,omitempty"`
+	WIFIBSSID                badoption.Listable[string]                                                  `json:"wifi_bssid,omitempty"`
+	InterfaceAddress         *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]]        `json:"interface_address,omitempty"`
+	NetworkInterfaceAddress  *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"`
+	DefaultInterfaceAddress  badoption.Listable[*badoption.Prefixable]                                   `json:"default_interface_address,omitempty"`
+	RuleSet                  badoption.Listable[string]                                                  `json:"rule_set,omitempty"`
+	RuleSetIPCIDRMatchSource bool                                                                        `json:"rule_set_ip_cidr_match_source,omitempty"`
+	RuleSetIPCIDRAcceptEmpty bool                                                                        `json:"rule_set_ip_cidr_accept_empty,omitempty"`
+	Invert                   bool                                                                        `json:"invert,omitempty"`
 
 	// Deprecated: renamed to rule_set_ip_cidr_match_source
 	Deprecated_RulesetIPCIDRMatchSource bool `json:"rule_set_ipcidr_match_source,omitempty"`

option/rule_set.go

@@ -182,28 +182,31 @@ func (r HeadlessRule) IsValid() bool {
 }
 
 type DefaultHeadlessRule struct {
-	QueryType            badoption.Listable[DNSQueryType]  `json:"query_type,omitempty"`
-	Network              badoption.Listable[string]        `json:"network,omitempty"`
-	Domain               badoption.Listable[string]        `json:"domain,omitempty"`
-	DomainSuffix         badoption.Listable[string]        `json:"domain_suffix,omitempty"`
-	DomainKeyword        badoption.Listable[string]        `json:"domain_keyword,omitempty"`
-	DomainRegex          badoption.Listable[string]        `json:"domain_regex,omitempty"`
-	SourceIPCIDR         badoption.Listable[string]        `json:"source_ip_cidr,omitempty"`
-	IPCIDR               badoption.Listable[string]        `json:"ip_cidr,omitempty"`
-	SourcePort           badoption.Listable[uint16]        `json:"source_port,omitempty"`
-	SourcePortRange      badoption.Listable[string]        `json:"source_port_range,omitempty"`
-	Port                 badoption.Listable[uint16]        `json:"port,omitempty"`
-	PortRange            badoption.Listable[string]        `json:"port_range,omitempty"`
-	ProcessName          badoption.Listable[string]        `json:"process_name,omitempty"`
-	ProcessPath          badoption.Listable[string]        `json:"process_path,omitempty"`
-	ProcessPathRegex     badoption.Listable[string]        `json:"process_path_regex,omitempty"`
-	PackageName          badoption.Listable[string]        `json:"package_name,omitempty"`
-	NetworkType          badoption.Listable[InterfaceType] `json:"network_type,omitempty"`
-	NetworkIsExpensive   bool                              `json:"network_is_expensive,omitempty"`
-	NetworkIsConstrained bool                              `json:"network_is_constrained,omitempty"`
-	WIFISSID             badoption.Listable[string]        `json:"wifi_ssid,omitempty"`
-	WIFIBSSID            badoption.Listable[string]        `json:"wifi_bssid,omitempty"`
-	Invert               bool                              `json:"invert,omitempty"`
+	QueryType               badoption.Listable[DNSQueryType]                                            `json:"query_type,omitempty"`
+	Network                 badoption.Listable[string]                                                  `json:"network,omitempty"`
+	Domain                  badoption.Listable[string]                                                  `json:"domain,omitempty"`
+	DomainSuffix            badoption.Listable[string]                                                  `json:"domain_suffix,omitempty"`
+	DomainKeyword           badoption.Listable[string]                                                  `json:"domain_keyword,omitempty"`
+	DomainRegex             badoption.Listable[string]                                                  `json:"domain_regex,omitempty"`
+	SourceIPCIDR            badoption.Listable[string]                                                  `json:"source_ip_cidr,omitempty"`
+	IPCIDR                  badoption.Listable[string]                                                  `json:"ip_cidr,omitempty"`
+	SourcePort              badoption.Listable[uint16]                                                  `json:"source_port,omitempty"`
+	SourcePortRange         badoption.Listable[string]                                                  `json:"source_port_range,omitempty"`
+	Port                    badoption.Listable[uint16]                                                  `json:"port,omitempty"`
+	PortRange               badoption.Listable[string]                                                  `json:"port_range,omitempty"`
+	ProcessName             badoption.Listable[string]                                                  `json:"process_name,omitempty"`
+	ProcessPath             badoption.Listable[string]                                                  `json:"process_path,omitempty"`
+	ProcessPathRegex        badoption.Listable[string]                                                  `json:"process_path_regex,omitempty"`
+	PackageName             badoption.Listable[string]                                                  `json:"package_name,omitempty"`
+	NetworkType             badoption.Listable[InterfaceType]                                           `json:"network_type,omitempty"`
+	NetworkIsExpensive      bool                                                                        `json:"network_is_expensive,omitempty"`
+	NetworkIsConstrained    bool                                                                        `json:"network_is_constrained,omitempty"`
+	WIFISSID                badoption.Listable[string]                                                  `json:"wifi_ssid,omitempty"`
+	WIFIBSSID               badoption.Listable[string]                                                  `json:"wifi_bssid,omitempty"`
+	NetworkInterfaceAddress *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"`
+	DefaultInterfaceAddress badoption.Listable[*badoption.Prefixable]                                   `json:"default_interface_address,omitempty"`
+
+	Invert bool `json:"invert,omitempty"`
 
 	DomainMatcher *domain.Matcher `json:"-"`
 	SourceIPSet   *netipx.IPSet   `json:"-"`
@@ -240,7 +243,7 @@ type PlainRuleSetCompat _PlainRuleSetCompat
 func (r PlainRuleSetCompat) MarshalJSON() ([]byte, error) {
 	var v any
 	switch r.Version {
-	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3:
+	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3, C.RuleSetVersion4:
 		v = r.Options
 	default:
 		return nil, E.New("unknown rule-set version: ", r.Version)
@@ -255,7 +258,7 @@ func (r *PlainRuleSetCompat) UnmarshalJSON(bytes []byte) error {
 	}
 	var v any
 	switch r.Version {
-	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3:
+	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3, C.RuleSetVersion4:
 		v = &r.Options
 	case 0:
 		return E.New("missing rule-set version")
@@ -272,7 +275,7 @@ func (r *PlainRuleSetCompat) UnmarshalJSON(bytes []byte) error {
 
 func (r PlainRuleSetCompat) Upgrade() (PlainRuleSet, error) {
 	switch r.Version {
-	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3:
+	case C.RuleSetVersion1, C.RuleSetVersion2, C.RuleSetVersion3, C.RuleSetVersion4:
 	default:
 		return PlainRuleSet{}, E.New("unknown rule-set version: " + F.ToString(r.Version))
 	}

protocol/anytls/outbound.go

@@ -26,7 +26,7 @@ func RegisterOutbound(registry *outbound.Registry) {
 
 type Outbound struct {
 	outbound.Adapter
-	dialer    N.Dialer
+	dialer    tls.Dialer
 	server    M.Socksaddr
 	tlsConfig tls.Config
 	client    *anytls.Client
@@ -58,7 +58,8 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 	if err != nil {
 		return nil, err
 	}
-	outbound.dialer = outboundDialer
+
+	outbound.dialer = tls.NewDialer(outboundDialer, tlsConfig)
 
 	client, err := anytls.NewClient(ctx, anytls.ClientConfig{
 		Password:                 options.Password,
@@ -91,16 +92,7 @@ func (d anytlsDialer) ListenPacket(ctx context.Context, destination M.Socksaddr)
 }
 
 func (h *Outbound) dialOut(ctx context.Context) (net.Conn, error) {
-	conn, err := h.dialer.DialContext(ctx, N.NetworkTCP, h.server)
-	if err != nil {
-		return nil, err
-	}
-	tlsConn, err := tls.ClientHandshake(ctx, conn, h.tlsConfig)
-	if err != nil {
-		common.Close(tlsConn, conn)
-		return nil, err
-	}
-	return tlsConn, nil
+	return h.dialer.DialTLSContext(ctx, h.server)
 }
 
 func (h *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {

protocol/http/outbound.go

@@ -34,7 +34,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 	if err != nil {
 		return nil, err
 	}
-	detour, err := tls.NewDialerFromOptions(ctx, router, outboundDialer, options.Server, common.PtrValueOrDefault(options.TLS))
+	detour, err := tls.NewDialerFromOptions(ctx, outboundDialer, options.Server, common.PtrValueOrDefault(options.TLS))
 	if err != nil {
 		return nil, err
 	}

protocol/tailscale/dns_transport.go

@@ -7,7 +7,6 @@ import (
 	"net/netip"
 	"net/url"
 	"os"
-	"reflect"
 	"strings"
 	"sync"
 
@@ -47,8 +46,6 @@ type DNSTransport struct {
 	acceptDefaultResolvers bool
 	dnsRouter              adapter.DNSRouter
 	endpointManager        adapter.EndpointManager
-	cfg                    *wgcfg.Config
-	dnsCfg                 *nDNS.Config
 	endpoint               *Endpoint
 	routePrefixes          []netip.Prefix
 	routes                 map[string][]adapter.DNSTransport
@@ -83,10 +80,10 @@ func (t *DNSTransport) Start(stage adapter.StartStage) error {
 	if !isTailscale {
 		return E.New("endpoint is not Tailscale: ", t.endpointTag)
 	}
-	if ep.onReconfig != nil {
+	if ep.onReconfigHook != nil {
 		return E.New("only one Tailscale DNS server is allowed for single endpoint")
 	}
-	ep.onReconfig = t.onReconfig
+	ep.onReconfigHook = t.onReconfig
 	t.endpoint = ep
 	return nil
 }
@@ -95,14 +92,6 @@ func (t *DNSTransport) Reset() {
 }
 
 func (t *DNSTransport) onReconfig(cfg *wgcfg.Config, routerCfg *router.Config, dnsCfg *nDNS.Config) {
-	if cfg == nil || dnsCfg == nil {
-		return
-	}
-	if (t.cfg != nil && reflect.DeepEqual(t.cfg, cfg)) && (t.dnsCfg != nil && reflect.DeepEqual(t.dnsCfg, dnsCfg)) {
-		return
-	}
-	t.cfg = cfg
-	t.dnsCfg = dnsCfg
 	err := t.updateDNSServers(routerCfg, dnsCfg)
 	if err != nil {
 		t.logger.Error(E.Cause(err, "update DNS servers"))

protocol/tailscale/endpoint.go

@@ -10,9 +10,9 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"reflect"
 	"runtime"
 	"strings"
-	"sync/atomic"
 	"syscall"
 	"time"
 
@@ -31,6 +31,7 @@ import (
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/atomic"
 	"github.com/sagernet/sing/common/bufio"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -49,8 +50,14 @@ import (
 	"github.com/sagernet/tailscale/version"
 	"github.com/sagernet/tailscale/wgengine"
 	"github.com/sagernet/tailscale/wgengine/filter"
+	"github.com/sagernet/tailscale/wgengine/router"
+	"github.com/sagernet/tailscale/wgengine/wgcfg"
+
+	"go4.org/netipx"
 )
 
+var _ adapter.OutboundWithPreferredRoutes = (*Endpoint)(nil)
+
 func init() {
 	version.SetVersion("sing-box " + C.Version)
 }
@@ -70,7 +77,12 @@ type Endpoint struct {
 	server            *tsnet.Server
 	stack             *stack.Stack
 	filter            *atomic.Pointer[filter.Filter]
-	onReconfig        wgengine.ReconfigListener
+	onReconfigHook    wgengine.ReconfigListener
+
+	cfg           *wgcfg.Config
+	dnsCfg        *tsDNS.Config
+	routeDomains  atomic.TypedValue[map[string]bool]
+	routePrefixes atomic.Pointer[netipx.IPSet]
 
 	acceptRoutes           bool
 	exitNode               string
@@ -216,9 +228,7 @@ func (t *Endpoint) Start(stage adapter.StartStage) error {
 	if err != nil {
 		return err
 	}
-	if t.onReconfig != nil {
-		t.server.ExportLocalBackend().ExportEngine().(wgengine.ExportedUserspaceEngine).SetOnReconfigListener(t.onReconfig)
-	}
+	t.server.ExportLocalBackend().ExportEngine().(wgengine.ExportedUserspaceEngine).SetOnReconfigListener(t.onReconfig)
 
 	ipStack := t.server.ExportNetstack().ExportIPStack()
 	gErr := ipStack.SetSpoofing(tun.DefaultNIC, true)
@@ -253,8 +263,7 @@ func (t *Endpoint) Start(stage adapter.StartStage) error {
 	if err != nil {
 		return E.Cause(err, "update prefs")
 	}
-	t.filter = localBackend.ExportFilter()
-
+	t.filter = atomic.PointerForm(localBackend.ExportFilter())
 	go t.watchState()
 	return nil
 }
@@ -473,10 +482,58 @@ func (t *Endpoint) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	t.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
 }
 
+func (t *Endpoint) PreferredDomain(domain string) bool {
+	routeDomains := t.routeDomains.Load()
+	if routeDomains == nil {
+		return false
+	}
+	return routeDomains[strings.ToLower(domain)]
+}
+
+func (t *Endpoint) PreferredAddress(address netip.Addr) bool {
+	routePrefixes := t.routePrefixes.Load()
+	if routePrefixes == nil {
+		return false
+	}
+	return routePrefixes.Contains(address)
+}
+
 func (t *Endpoint) Server() *tsnet.Server {
 	return t.server
 }
 
+func (t *Endpoint) onReconfig(cfg *wgcfg.Config, routerCfg *router.Config, dnsCfg *tsDNS.Config) {
+	if cfg == nil || dnsCfg == nil {
+		return
+	}
+	if (t.cfg != nil && reflect.DeepEqual(t.cfg, cfg)) && (t.dnsCfg != nil && reflect.DeepEqual(t.dnsCfg, dnsCfg)) {
+		return
+	}
+	t.cfg = cfg
+	t.dnsCfg = dnsCfg
+
+	routeDomains := make(map[string]bool)
+	for fqdn := range dnsCfg.Routes {
+		routeDomains[fqdn.WithoutTrailingDot()] = true
+	}
+	for _, fqdn := range dnsCfg.SearchDomains {
+		routeDomains[fqdn.WithoutTrailingDot()] = true
+	}
+	t.routeDomains.Store(routeDomains)
+
+	var builder netipx.IPSetBuilder
+	for _, peer := range cfg.Peers {
+		for _, allowedIP := range peer.AllowedIPs {
+			builder.AddPrefix(allowedIP)
+		}
+	}
+	t.routePrefixes.Store(common.Must1(builder.IPSet()))
+
+	if t.onReconfigHook != nil {
+		t.onReconfigHook(cfg, routerCfg, dnsCfg)
+	}
+}
+
 func addressFromAddr(destination netip.Addr) tcpip.Address {
 	if destination.Is6() {
 		return tcpip.AddrFrom16(destination.As16())

protocol/trojan/outbound.go

@@ -34,6 +34,7 @@ type Outbound struct {
 	key             [56]byte
 	multiplexDialer *mux.Client
 	tlsConfig       tls.Config
+	tlsDialer       tls.Dialer
 	transport       adapter.V2RayClientTransport
 }
 
@@ -54,6 +55,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		if err != nil {
 			return nil, err
 		}
+		outbound.tlsDialer = tls.NewDialer(outboundDialer, outbound.tlsConfig)
 	}
 	if options.Transport != nil {
 		outbound.transport, err = v2ray.NewClientTransport(ctx, outbound.dialer, outbound.serverAddr, common.PtrValueOrDefault(options.Transport), outbound.tlsConfig)
@@ -121,11 +123,10 @@ func (h *trojanDialer) DialContext(ctx context.Context, network string, destinat
 	var err error
 	if h.transport != nil {
 		conn, err = h.transport.DialContext(ctx)
+	} else if h.tlsDialer != nil {
+		conn, err = h.tlsDialer.DialTLSContext(ctx, h.serverAddr)
 	} else {
 		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err == nil && h.tlsConfig != nil {
-			conn, err = tls.ClientHandshake(ctx, conn, h.tlsConfig)
-		}
 	}
 	if err != nil {
 		common.Close(conn)

protocol/vless/outbound.go

@@ -35,6 +35,7 @@ type Outbound struct {
 	serverAddr      M.Socksaddr
 	multiplexDialer *mux.Client
 	tlsConfig       tls.Config
+	tlsDialer       tls.Dialer
 	transport       adapter.V2RayClientTransport
 	packetAddr      bool
 	xudp            bool
@@ -56,6 +57,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		if err != nil {
 			return nil, err
 		}
+		outbound.tlsDialer = tls.NewDialer(outboundDialer, outbound.tlsConfig)
 	}
 	if options.Transport != nil {
 		outbound.transport, err = v2ray.NewClientTransport(ctx, outbound.dialer, outbound.serverAddr, common.PtrValueOrDefault(options.Transport), outbound.tlsConfig)
@@ -140,11 +142,10 @@ func (h *vlessDialer) DialContext(ctx context.Context, network string, destinati
 	var err error
 	if h.transport != nil {
 		conn, err = h.transport.DialContext(ctx)
+	} else if h.tlsDialer != nil {
+		conn, err = h.tlsDialer.DialTLSContext(ctx, h.serverAddr)
 	} else {
 		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err == nil && h.tlsConfig != nil {
-			conn, err = tls.ClientHandshake(ctx, conn, h.tlsConfig)
-		}
 	}
 	if err != nil {
 		return nil, err
@@ -183,11 +184,10 @@ func (h *vlessDialer) ListenPacket(ctx context.Context, destination M.Socksaddr)
 	var err error
 	if h.transport != nil {
 		conn, err = h.transport.DialContext(ctx)
+	} else if h.tlsDialer != nil {
+		conn, err = h.tlsDialer.DialTLSContext(ctx, h.serverAddr)
 	} else {
 		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err == nil && h.tlsConfig != nil {
-			conn, err = tls.ClientHandshake(ctx, conn, h.tlsConfig)
-		}
 	}
 	if err != nil {
 		common.Close(conn)

protocol/vmess/outbound.go

@@ -35,6 +35,7 @@ type Outbound struct {
 	serverAddr      M.Socksaddr
 	multiplexDialer *mux.Client
 	tlsConfig       tls.Config
+	tlsDialer       tls.Dialer
 	transport       adapter.V2RayClientTransport
 	packetAddr      bool
 	xudp            bool
@@ -56,6 +57,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		if err != nil {
 			return nil, err
 		}
+		outbound.tlsDialer = tls.NewDialer(outboundDialer, outbound.tlsConfig)
 	}
 	if options.Transport != nil {
 		outbound.transport, err = v2ray.NewClientTransport(ctx, outbound.dialer, outbound.serverAddr, common.PtrValueOrDefault(options.Transport), outbound.tlsConfig)
@@ -154,11 +156,10 @@ func (h *vmessDialer) DialContext(ctx context.Context, network string, destinati
 	var err error
 	if h.transport != nil {
 		conn, err = h.transport.DialContext(ctx)
+	} else if h.tlsDialer != nil {
+		conn, err = h.tlsDialer.DialTLSContext(ctx, h.serverAddr)
 	} else {
 		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err == nil && h.tlsConfig != nil {
-			conn, err = tls.ClientHandshake(ctx, conn, h.tlsConfig)
-		}
 	}
 	if err != nil {
 		common.Close(conn)
@@ -182,11 +183,10 @@ func (h *vmessDialer) ListenPacket(ctx context.Context, destination M.Socksaddr)
 	var err error
 	if h.transport != nil {
 		conn, err = h.transport.DialContext(ctx)
+	} else if h.tlsDialer != nil {
+		conn, err = h.tlsDialer.DialTLSContext(ctx, h.serverAddr)
 	} else {
 		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err == nil && h.tlsConfig != nil {
-			conn, err = tls.ClientHandshake(ctx, conn, h.tlsConfig)
-		}
 	}
 	if err != nil {
 		return nil, err

protocol/wireguard/endpoint.go

@@ -22,6 +22,8 @@ import (
 	"github.com/sagernet/sing/service"
 )
 
+var _ adapter.OutboundWithPreferredRoutes = (*Endpoint)(nil)
+
 func RegisterEndpoint(registry *endpoint.Registry) {
 	endpoint.Register[option.WireGuardEndpointOptions](registry, C.TypeWireGuard, NewEndpoint)
 }
@@ -210,3 +212,11 @@ func (w *Endpoint) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
 	}
 	return w.endpoint.ListenPacket(ctx, destination)
 }
+
+func (w *Endpoint) PreferredDomain(domain string) bool {
+	return false
+}
+
+func (w *Endpoint) PreferredAddress(address netip.Addr) bool {
+	return w.endpoint.Lookup(address) != nil
+}

protocol/wireguard/outbound.go

@@ -21,6 +21,8 @@ import (
 	"github.com/sagernet/sing/service"
 )
 
+var _ adapter.OutboundWithPreferredRoutes = (*Outbound)(nil)
+
 func RegisterOutbound(registry *outbound.Registry) {
 	outbound.Register[option.LegacyWireGuardOutboundOptions](registry, C.TypeWireGuard, NewOutbound)
 }
@@ -158,3 +160,11 @@ func (o *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
 	}
 	return o.endpoint.ListenPacket(ctx, destination)
 }
+
+func (o *Outbound) PreferredDomain(domain string) bool {
+	return false
+}
+
+func (o *Outbound) PreferredAddress(address netip.Addr) bool {
+	return o.endpoint.Lookup(address) != nil
+}

route/rule/rule_default.go

@@ -117,7 +117,7 @@ func NewDefaultRule(ctx context.Context, logger log.ContextLogger, options optio
 	if len(options.DomainRegex) > 0 {
 		item, err := NewDomainRegexItem(options.DomainRegex)
 		if err != nil {
-			return nil, E.Cause(err, "domain_regex")
+			return nil, err
 		}
 		rule.destinationAddressItems = append(rule.destinationAddressItems, item)
 		rule.allItems = append(rule.allItems, item)
@@ -246,6 +246,26 @@ func NewDefaultRule(ctx context.Context, logger log.ContextLogger, options optio
 		rule.items = append(rule.items, item)
 		rule.allItems = append(rule.allItems, item)
 	}
+	if options.InterfaceAddress != nil && options.InterfaceAddress.Size() > 0 {
+		item := NewInterfaceAddressItem(networkManager, options.InterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if options.NetworkInterfaceAddress != nil && options.NetworkInterfaceAddress.Size() > 0 {
+		item := NewNetworkInterfaceAddressItem(networkManager, options.NetworkInterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.DefaultInterfaceAddress) > 0 {
+		item := NewDefaultInterfaceAddressItem(networkManager, options.DefaultInterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.PreferredBy) > 0 {
+		item := NewPreferredByItem(ctx, options.PreferredBy)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
 	if len(options.RuleSet) > 0 {
 		var matchSource bool
 		if options.RuleSetIPCIDRMatchSource {

route/rule/rule_default_interface_address.go

@@ -0,0 +1,56 @@
+package rule
+
+import (
+	"net/netip"
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/json/badoption"
+)
+
+var _ RuleItem = (*DefaultInterfaceAddressItem)(nil)
+
+type DefaultInterfaceAddressItem struct {
+	interfaceMonitor   tun.DefaultInterfaceMonitor
+	interfaceAddresses []netip.Prefix
+}
+
+func NewDefaultInterfaceAddressItem(networkManager adapter.NetworkManager, interfaceAddresses badoption.Listable[*badoption.Prefixable]) *DefaultInterfaceAddressItem {
+	item := &DefaultInterfaceAddressItem{
+		interfaceMonitor:   networkManager.InterfaceMonitor(),
+		interfaceAddresses: make([]netip.Prefix, 0, len(interfaceAddresses)),
+	}
+	for _, prefixable := range interfaceAddresses {
+		item.interfaceAddresses = append(item.interfaceAddresses, prefixable.Build(netip.Prefix{}))
+	}
+	return item
+}
+
+func (r *DefaultInterfaceAddressItem) Match(metadata *adapter.InboundContext) bool {
+	defaultInterface := r.interfaceMonitor.DefaultInterface()
+	if defaultInterface == nil {
+		return false
+	}
+	for _, address := range r.interfaceAddresses {
+		if common.All(defaultInterface.Addresses, func(it netip.Prefix) bool {
+			return !address.Overlaps(it)
+		}) {
+			return false
+		}
+	}
+	return true
+}
+
+func (r *DefaultInterfaceAddressItem) String() string {
+	addressLen := len(r.interfaceAddresses)
+	switch {
+	case addressLen == 1:
+		return "default_interface_address=" + r.interfaceAddresses[0].String()
+	case addressLen > 3:
+		return "default_interface_address=[" + strings.Join(common.Map(r.interfaceAddresses[:3], netip.Prefix.String), " ") + "...]"
+	default:
+		return "default_interface_address=[" + strings.Join(common.Map(r.interfaceAddresses, netip.Prefix.String), " ") + "]"
+	}
+}

route/rule/rule_dns.go

@@ -247,6 +247,21 @@ func NewDefaultDNSRule(ctx context.Context, logger log.ContextLogger, options op
 		rule.items = append(rule.items, item)
 		rule.allItems = append(rule.allItems, item)
 	}
+	if options.InterfaceAddress != nil && options.InterfaceAddress.Size() > 0 {
+		item := NewInterfaceAddressItem(networkManager, options.InterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if options.NetworkInterfaceAddress != nil && options.NetworkInterfaceAddress.Size() > 0 {
+		item := NewNetworkInterfaceAddressItem(networkManager, options.NetworkInterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.DefaultInterfaceAddress) > 0 {
+		item := NewDefaultInterfaceAddressItem(networkManager, options.DefaultInterfaceAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
 	if len(options.RuleSet) > 0 {
 		var matchSource bool
 		if options.RuleSetIPCIDRMatchSource {

route/rule/rule_headless.go

@@ -164,13 +164,21 @@ func NewDefaultHeadlessRule(ctx context.Context, options option.DefaultHeadlessR
 			item := NewWIFISSIDItem(networkManager, options.WIFISSID)
 			rule.items = append(rule.items, item)
 			rule.allItems = append(rule.allItems, item)
-
 		}
 		if len(options.WIFIBSSID) > 0 {
 			item := NewWIFIBSSIDItem(networkManager, options.WIFIBSSID)
 			rule.items = append(rule.items, item)
 			rule.allItems = append(rule.allItems, item)
-
+		}
+		if options.NetworkInterfaceAddress != nil && options.NetworkInterfaceAddress.Size() > 0 {
+			item := NewNetworkInterfaceAddressItem(networkManager, options.NetworkInterfaceAddress)
+			rule.items = append(rule.items, item)
+			rule.allItems = append(rule.allItems, item)
+		}
+		if len(options.DefaultInterfaceAddress) > 0 {
+			item := NewDefaultInterfaceAddressItem(networkManager, options.DefaultInterfaceAddress)
+			rule.items = append(rule.items, item)
+			rule.allItems = append(rule.allItems, item)
 		}
 	}
 	if len(options.AdGuardDomain) > 0 {

route/rule/rule_interface_address.go

@@ -0,0 +1,62 @@
+package rule
+
+import (
+	"net/netip"
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/control"
+	"github.com/sagernet/sing/common/json/badjson"
+	"github.com/sagernet/sing/common/json/badoption"
+)
+
+var _ RuleItem = (*InterfaceAddressItem)(nil)
+
+type InterfaceAddressItem struct {
+	networkManager     adapter.NetworkManager
+	interfaceAddresses map[string][]netip.Prefix
+	description        string
+}
+
+func NewInterfaceAddressItem(networkManager adapter.NetworkManager, interfaceAddresses *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]]) *InterfaceAddressItem {
+	item := &InterfaceAddressItem{
+		networkManager:     networkManager,
+		interfaceAddresses: make(map[string][]netip.Prefix, interfaceAddresses.Size()),
+	}
+	var entryDescriptions []string
+	for _, entry := range interfaceAddresses.Entries() {
+		prefixes := make([]netip.Prefix, 0, len(entry.Value))
+		for _, prefixable := range entry.Value {
+			prefixes = append(prefixes, prefixable.Build(netip.Prefix{}))
+		}
+		item.interfaceAddresses[entry.Key] = prefixes
+		entryDescriptions = append(entryDescriptions, entry.Key+"="+strings.Join(common.Map(prefixes, netip.Prefix.String), ","))
+	}
+	item.description = "interface_address=[" + strings.Join(entryDescriptions, " ") + "]"
+	return item
+}
+
+func (r *InterfaceAddressItem) Match(metadata *adapter.InboundContext) bool {
+	interfaces := r.networkManager.InterfaceFinder().Interfaces()
+	for ifName, addresses := range r.interfaceAddresses {
+		iface := common.Find(interfaces, func(it control.Interface) bool {
+			return it.Name == ifName
+		})
+		if iface.Name == "" {
+			return false
+		}
+		if common.All(addresses, func(address netip.Prefix) bool {
+			return common.All(iface.Addresses, func(it netip.Prefix) bool {
+				return !address.Overlaps(it)
+			})
+		}) {
+			return false
+		}
+	}
+	return true
+}
+
+func (r *InterfaceAddressItem) String() string {
+	return r.description
+}

route/rule/rule_item_preferred_by.go

@@ -0,0 +1,86 @@
+package rule
+
+import (
+	"context"
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
+	"github.com/sagernet/sing/service"
+)
+
+var _ RuleItem = (*PreferredByItem)(nil)
+
+type PreferredByItem struct {
+	ctx          context.Context
+	outboundTags []string
+	outbounds    []adapter.OutboundWithPreferredRoutes
+}
+
+func NewPreferredByItem(ctx context.Context, outboundTags []string) *PreferredByItem {
+	return &PreferredByItem{
+		ctx:          ctx,
+		outboundTags: outboundTags,
+	}
+}
+
+func (r *PreferredByItem) Start() error {
+	outboundManager := service.FromContext[adapter.OutboundManager](r.ctx)
+	for _, outboundTag := range r.outboundTags {
+		rawOutbound, loaded := outboundManager.Outbound(outboundTag)
+		if !loaded {
+			return E.New("outbound not found: ", outboundTag)
+		}
+		outboundWithPreferredRoutes, withRoutes := rawOutbound.(adapter.OutboundWithPreferredRoutes)
+		if !withRoutes {
+			return E.New("outbound type does not support preferred routes: ", rawOutbound.Type())
+		}
+		r.outbounds = append(r.outbounds, outboundWithPreferredRoutes)
+	}
+	return nil
+}
+
+func (r *PreferredByItem) Match(metadata *adapter.InboundContext) bool {
+	var domainHost string
+	if metadata.Domain != "" {
+		domainHost = metadata.Domain
+	} else {
+		domainHost = metadata.Destination.Fqdn
+	}
+	if domainHost != "" {
+		for _, outbound := range r.outbounds {
+			if outbound.PreferredDomain(domainHost) {
+				return true
+			}
+		}
+	}
+	if metadata.Destination.IsIP() {
+		for _, outbound := range r.outbounds {
+			if outbound.PreferredAddress(metadata.Destination.Addr) {
+				return true
+			}
+		}
+	}
+	if len(metadata.DestinationAddresses) > 0 {
+		for _, address := range metadata.DestinationAddresses {
+			for _, outbound := range r.outbounds {
+				if outbound.PreferredAddress(address) {
+					return true
+				}
+			}
+		}
+	}
+	return false
+}
+
+func (r *PreferredByItem) String() string {
+	description := "preferred_by="
+	pLen := len(r.outboundTags)
+	if pLen == 1 {
+		description += F.ToString(r.outboundTags[0])
+	} else {
+		description += "[" + strings.Join(F.MapToString(r.outboundTags), " ") + "]"
+	}
+	return description
+}

route/rule/rule_network_interface_address.go

@@ -0,0 +1,64 @@
+package rule
+
+import (
+	"net/netip"
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/json/badjson"
+	"github.com/sagernet/sing/common/json/badoption"
+)
+
+var _ RuleItem = (*NetworkInterfaceAddressItem)(nil)
+
+type NetworkInterfaceAddressItem struct {
+	networkManager     adapter.NetworkManager
+	interfaceAddresses map[C.InterfaceType][]netip.Prefix
+	description        string
+}
+
+func NewNetworkInterfaceAddressItem(networkManager adapter.NetworkManager, interfaceAddresses *badjson.TypedMap[option.InterfaceType, badoption.Listable[*badoption.Prefixable]]) *NetworkInterfaceAddressItem {
+	item := &NetworkInterfaceAddressItem{
+		networkManager:     networkManager,
+		interfaceAddresses: make(map[C.InterfaceType][]netip.Prefix, interfaceAddresses.Size()),
+	}
+	var entryDescriptions []string
+	for _, entry := range interfaceAddresses.Entries() {
+		prefixes := make([]netip.Prefix, 0, len(entry.Value))
+		for _, prefixable := range entry.Value {
+			prefixes = append(prefixes, prefixable.Build(netip.Prefix{}))
+		}
+		item.interfaceAddresses[entry.Key.Build()] = prefixes
+		entryDescriptions = append(entryDescriptions, entry.Key.Build().String()+"="+strings.Join(common.Map(prefixes, netip.Prefix.String), ","))
+	}
+	item.description = "network_interface_address=[" + strings.Join(entryDescriptions, " ") + "]"
+	return item
+}
+
+func (r *NetworkInterfaceAddressItem) Match(metadata *adapter.InboundContext) bool {
+	interfaces := r.networkManager.NetworkInterfaces()
+match:
+	for ifType, addresses := range r.interfaceAddresses {
+		for _, networkInterface := range interfaces {
+			if networkInterface.Type != ifType {
+				continue
+			}
+			if common.Any(networkInterface.Addresses, func(it netip.Prefix) bool {
+				return common.Any(addresses, func(prefix netip.Prefix) bool {
+					return prefix.Overlaps(it)
+				})
+			}) {
+				continue match
+			}
+		}
+		return false
+	}
+	return true
+}
+
+func (r *NetworkInterfaceAddressItem) String() string {
+	return r.description
+}

route/rule/rule_set.go

@@ -42,7 +42,7 @@ func extractIPSetFromRule(rawRule adapter.HeadlessRule) []*netipx.IPSet {
 	}
 }
 
-func hasHeadlessRule(rules []option.HeadlessRule, cond func(rule option.DefaultHeadlessRule) bool) bool {
+func HasHeadlessRule(rules []option.HeadlessRule, cond func(rule option.DefaultHeadlessRule) bool) bool {
 	for _, rule := range rules {
 		switch rule.Type {
 		case C.RuleTypeDefault:
@@ -50,7 +50,7 @@ func hasHeadlessRule(rules []option.HeadlessRule, cond func(rule option.DefaultH
 				return true
 			}
 		case C.RuleTypeLogical:
-			if hasHeadlessRule(rule.LogicalOptions.Rules, cond) {
+			if HasHeadlessRule(rule.LogicalOptions.Rules, cond) {
 				return true
 			}
 		}

route/rule/rule_set_local.go

@@ -138,9 +138,9 @@ func (s *LocalRuleSet) reloadRules(headlessRules []option.HeadlessRule) error {
 		}
 	}
 	var metadata adapter.RuleSetMetadata
-	metadata.ContainsProcessRule = hasHeadlessRule(headlessRules, isProcessHeadlessRule)
-	metadata.ContainsWIFIRule = hasHeadlessRule(headlessRules, isWIFIHeadlessRule)
-	metadata.ContainsIPCIDRRule = hasHeadlessRule(headlessRules, isIPCIDRHeadlessRule)
+	metadata.ContainsProcessRule = HasHeadlessRule(headlessRules, isProcessHeadlessRule)
+	metadata.ContainsWIFIRule = HasHeadlessRule(headlessRules, isWIFIHeadlessRule)
+	metadata.ContainsIPCIDRRule = HasHeadlessRule(headlessRules, isIPCIDRHeadlessRule)
 	s.rules = rules
 	s.metadata = metadata
 	s.callbackAccess.Lock()

route/rule/rule_set_remote.go

@@ -185,9 +185,9 @@ func (s *RemoteRuleSet) loadBytes(content []byte) error {
 			return E.Cause(err, "parse rule_set.rules.[", i, "]")
 		}
 	}
-	s.metadata.ContainsProcessRule = hasHeadlessRule(plainRuleSet.Rules, isProcessHeadlessRule)
-	s.metadata.ContainsWIFIRule = hasHeadlessRule(plainRuleSet.Rules, isWIFIHeadlessRule)
-	s.metadata.ContainsIPCIDRRule = hasHeadlessRule(plainRuleSet.Rules, isIPCIDRHeadlessRule)
+	s.metadata.ContainsProcessRule = HasHeadlessRule(plainRuleSet.Rules, isProcessHeadlessRule)
+	s.metadata.ContainsWIFIRule = HasHeadlessRule(plainRuleSet.Rules, isWIFIHeadlessRule)
+	s.metadata.ContainsIPCIDRRule = HasHeadlessRule(plainRuleSet.Rules, isIPCIDRHeadlessRule)
 	s.rules = rules
 	s.callbackAccess.Lock()
 	callbacks := s.callbacks.Array()

transport/v2raygrpclite/client.go

@@ -29,7 +29,6 @@ var defaultClientHeader = http.Header{
 
 type Client struct {
 	ctx        context.Context
-	dialer     N.Dialer
 	serverAddr M.Socksaddr
 	transport  *http2.Transport
 	options    option.V2RayGRPCOptions
@@ -46,7 +45,6 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 	}
 	client := &Client{
 		ctx:        ctx,
-		dialer:     dialer,
 		serverAddr: serverAddr,
 		options:    options,
 		transport: &http2.Transport{
@@ -62,7 +60,6 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		},
 		host: host,
 	}
-
 	if tlsConfig == nil {
 		client.transport.DialTLSContext = func(ctx context.Context, network, addr string, cfg *tls.STDConfig) (net.Conn, error) {
 			return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
@@ -71,12 +68,9 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		if len(tlsConfig.NextProtos()) == 0 {
 			tlsConfig.SetNextProtos([]string{http2.NextProtoTLS})
 		}
+		tlsDialer := tls.NewDialer(dialer, tlsConfig)
 		client.transport.DialTLSContext = func(ctx context.Context, network, addr string, cfg *tls.STDConfig) (net.Conn, error) {
-			conn, err := dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
-			if err != nil {
-				return nil, err
-			}
-			return tls.ClientHandshake(ctx, conn, tlsConfig)
+			return tlsDialer.DialTLSContext(ctx, M.ParseSocksaddr(addr))
 		}
 	}
 

transport/v2rayhttp/client.go

@@ -47,15 +47,12 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		if len(tlsConfig.NextProtos()) == 0 {
 			tlsConfig.SetNextProtos([]string{http2.NextProtoTLS})
 		}
+		tlsDialer := tls.NewDialer(dialer, tlsConfig)
 		transport = &http2.Transport{
 			ReadIdleTimeout: time.Duration(options.IdleTimeout),
 			PingTimeout:     time.Duration(options.PingTimeout),
 			DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.STDConfig) (net.Conn, error) {
-				conn, err := dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
-				if err != nil {
-					return nil, err
-				}
-				return tls.ClientHandshake(ctx, conn, tlsConfig)
+				return tlsDialer.DialTLSContext(ctx, M.ParseSocksaddr(addr))
 			},
 		}
 	}

transport/v2rayhttpupgrade/client.go

@@ -23,7 +23,6 @@ var _ adapter.V2RayClientTransport = (*Client)(nil)
 
 type Client struct {
 	dialer     N.Dialer
-	tlsConfig  tls.Config
 	serverAddr M.Socksaddr
 	requestURL url.URL
 	headers    http.Header
@@ -35,6 +34,7 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		if len(tlsConfig.NextProtos()) == 0 {
 			tlsConfig.SetNextProtos([]string{"http/1.1"})
 		}
+		dialer = tls.NewDialer(dialer, tlsConfig)
 	}
 	var host string
 	if options.Host != "" {
@@ -65,7 +65,6 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 	}
 	return &Client{
 		dialer:     dialer,
-		tlsConfig:  tlsConfig,
 		serverAddr: serverAddr,
 		requestURL: requestURL,
 		headers:    headers,
@@ -78,12 +77,6 @@ func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
 	if err != nil {
 		return nil, err
 	}
-	if c.tlsConfig != nil {
-		conn, err = tls.ClientHandshake(ctx, conn, c.tlsConfig)
-		if err != nil {
-			return nil, err
-		}
-	}
 	request := &http.Request{
 		Method: http.MethodGet,
 		URL:    &c.requestURL,

transport/v2raywebsocket/client.go

@@ -26,7 +26,6 @@ var _ adapter.V2RayClientTransport = (*Client)(nil)
 
 type Client struct {
 	dialer              N.Dialer
-	tlsConfig           tls.Config
 	serverAddr          M.Socksaddr
 	requestURL          url.URL
 	headers             http.Header
@@ -39,6 +38,7 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		if len(tlsConfig.NextProtos()) == 0 {
 			tlsConfig.SetNextProtos([]string{"http/1.1"})
 		}
+		dialer = tls.NewDialer(dialer, tlsConfig)
 	}
 	var requestURL url.URL
 	if tlsConfig == nil {
@@ -65,7 +65,6 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 	}
 	return &Client{
 		dialer,
-		tlsConfig,
 		serverAddr,
 		requestURL,
 		headers,
@@ -79,12 +78,6 @@ func (c *Client) dialContext(ctx context.Context, requestURL *url.URL, headers h
 	if err != nil {
 		return nil, err
 	}
-	if c.tlsConfig != nil {
-		conn, err = tls.ClientHandshake(ctx, conn, c.tlsConfig)
-		if err != nil {
-			return nil, err
-		}
-	}
 	var deadlineConn net.Conn
 	if deadline.NeedAdditionalReadDeadline(conn) {
 		deadlineConn = deadline.NewConn(conn)

transport/wireguard/endpoint.go

@@ -8,7 +8,9 @@ import (
 	"net"
 	"net/netip"
 	"os"
+	"reflect"
 	"strings"
+	"unsafe"
 
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -30,6 +32,7 @@ type Endpoint struct {
 	allowedAddress []netip.Prefix
 	tunDevice      Device
 	device         *device.Device
+	allowedIPs     *device.AllowedIPs
 	pause          pause.Manager
 	pauseCallback  *list.Element[pause.Callback]
 }
@@ -191,6 +194,7 @@ func (e *Endpoint) Start(resolve bool) error {
 	if e.pause != nil {
 		e.pauseCallback = e.pause.RegisterCallback(e.onPauseUpdated)
 	}
+	e.allowedIPs = (*device.AllowedIPs)(unsafe.Pointer(reflect.Indirect(reflect.ValueOf(wgDevice)).FieldByName("allowedips").UnsafeAddr()))
 	return nil
 }
 
@@ -218,6 +222,13 @@ func (e *Endpoint) Close() error {
 	return nil
 }
 
+func (e *Endpoint) Lookup(address netip.Addr) *device.Peer {
+	if e.allowedIPs == nil {
+		return nil
+	}
+	return e.allowedIPs.Lookup(address.AsSlice())
+}
+
 func (e *Endpoint) onPauseUpdated(event int) {
 	switch event {
 	case pause.EventDevicePaused, pause.EventNetworkPause: