Fix linux route rules

docs/changelog.md

@@ -2,10 +2,19 @@
 icon: material/alert-decagram
 ---
 
-#### 1.13.0-alpha.5
+#### 1.13.0-alpha.6
 
+* Add proxy support for ICMP echo request **1**
 * Fixes and improvements
 
+**1**:
+
+You can now match ICMP echo (ping) requests using the new `icmp` network in routing rules.
+
+Such traffic originates from `TUN`, `WireGuard`, and `Tailscale` inbounds and can be routed to `Direct`, `WireGuard`, and `Tailscale` outbounds.
+
+See [Route Rule](/configuration/route/rule/#network).
+
 #### 1.12.3
 
 * Fixes and improvements

docs/configuration/route/rule.md

@@ -7,7 +7,8 @@ icon: material/new-box
     :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)
+    :material-plus: [preferred_by](#preferred_by)  
+    :material-alert: [network](#network)
 
 !!! quote "Changes in sing-box 1.11.0"
 
@@ -226,7 +227,15 @@ Sniffed client type, see [Protocol Sniff](/configuration/route/sniff/) for detai
 
 #### network
 
-`tcp` or `udp`.
+!!! quote "Changes in sing-box 1.13.0"
+
+    Since sing-box 1.13.0, you can match ICMP echo (ping) requests via the new `icmp` network.
+    
+    Such traffic originates from `TUN`, `WireGuard`, and `Tailscale` inbounds and can be routed to `Direct`, `WireGuard`, and `Tailscale` outbounds.
+
+Match network type.
+
+`tcp`, `udp` or `icmp`.
 
 #### domain
 

docs/configuration/route/rule.zh.md

@@ -7,7 +7,8 @@ icon: material/new-box
     :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)
+    :material-plus: [preferred_by](#preferred_by)  
+    :material-alert: [network](#network)
 
 !!! quote "sing-box 1.11.0 中的更改"
 
@@ -223,7 +224,15 @@ icon: material/new-box
 
 #### network
 
-`tcp` 或 `udp`。
+!!! quote "sing-box 1.13.0 中的更改"
+
+    自 sing-box 1.13.0 起，您可以通过新的 `icmp` 网络匹配 ICMP 回显（ping）请求。
+
+    此类流量源自 `TUN`、`WireGuard` 和 `Tailscale` 入站，并可路由至 `Direct`、`WireGuard` 和 `Tailscale` 出站。
+
+匹配网络类型。
+
+`tcp`、`udp` 或 `icmp`。
 
 #### domain
 

go.mod

@@ -33,7 +33,7 @@ require (
 	github.com/sagernet/sing-shadowsocks v0.2.8
 	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.1.0.20250825142028-0386fcb66a72
+	github.com/sagernet/sing-tun v0.7.0-beta.1.0.20250826063021-b5f3fecc25df
 	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.6

go.sum

@@ -179,8 +179,8 @@ github.com/sagernet/sing-shadowsocks2 v0.2.1 h1:dWV9OXCeFPuYGHb6IRqlSptVnSzOelnq
 github.com/sagernet/sing-shadowsocks2 v0.2.1/go.mod h1:RnXS0lExcDAovvDeniJ4IKa2IuChrdipolPYWBv9hWQ=
 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 h1:tK+75l64tm9WvEFrYRE1t0YxoFdWQqw/h7Uhzj0vJ+w=
 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11/go.mod h1:sWqKnGlMipCHaGsw1sTTlimyUpgzP4WP3pjhCsYt9oA=
-github.com/sagernet/sing-tun v0.7.0-beta.1.0.20250825142028-0386fcb66a72 h1:8UFMs1xVFIq+z+HVwe4NUjxqFfhbmomorH08SS1JjqE=
-github.com/sagernet/sing-tun v0.7.0-beta.1.0.20250825142028-0386fcb66a72/go.mod h1:1fyZW3WhK6rg0REkeJ2LIuK/v+Q7X/gQU/FyQMza7LM=
+github.com/sagernet/sing-tun v0.7.0-beta.1.0.20250826063021-b5f3fecc25df h1:3mGK00i3D3zvAijGteOCmGvsKdatxFzlz/Jstrohs88=
+github.com/sagernet/sing-tun v0.7.0-beta.1.0.20250826063021-b5f3fecc25df/go.mod h1:LokZYuEV3crByjQc/XRohLgfNvybtXdx5qe/I4W6S7k=
 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=

protocol/group/selector.go

@@ -3,6 +3,7 @@ package group
 import (
 	"context"
 	"net"
+	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/adapter/outbound"
@@ -10,6 +11,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	tun "github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
@@ -174,6 +176,14 @@ func (s *Selector) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	}
 }
 
+func (s *Selector) NewDirectRouteConnection(metadata adapter.InboundContext, routeContext tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error) {
+	selected := s.selected.Load()
+	if !common.Contains(selected.Network(), metadata.Network) {
+		return nil, E.New(metadata.Network, " is not supported by outbound: ", selected.Tag())
+	}
+	return selected.(adapter.DirectRouteOutbound).NewDirectRouteConnection(metadata, routeContext, timeout)
+}
+
 func RealTag(detour adapter.Outbound) string {
 	if group, isGroup := detour.(adapter.OutboundGroup); isGroup {
 		return group.Now()

protocol/group/urltest.go

@@ -14,6 +14,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	tun "github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/batch"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -170,6 +171,21 @@ func (s *URLTest) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	s.connection.NewPacketConnection(ctx, s, conn, metadata, onClose)
 }
 
+func (s *URLTest) NewDirectRouteConnection(metadata adapter.InboundContext, routeContext tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error) {
+	s.group.Touch()
+	selected := s.group.selectedOutboundTCP
+	if selected == nil {
+		selected, _ = s.group.Select(N.NetworkTCP)
+	}
+	if selected == nil {
+		return nil, E.New("missing supported outbound")
+	}
+	if !common.Contains(selected.Network(), metadata.Network) {
+		return nil, E.New(metadata.Network, " is not supported by outbound: ", selected.Tag())
+	}
+	return selected.(adapter.DirectRouteOutbound).NewDirectRouteConnection(metadata, routeContext, timeout)
+}
+
 type URLTestGroup struct {
 	ctx                          context.Context
 	router                       adapter.Router

route/route.go

@@ -482,7 +482,7 @@ match:
 				} else if len(newPacketBuffers) > 0 {
 					packetBuffers = append(packetBuffers, newPacketBuffers...)
 				}
-			} else {
+			} else if metadata.Network != N.NetworkICMP {
 				selectedRule = currentRule
 				selectedRuleIndex = currentRuleIndex
 				break match
@@ -496,8 +496,7 @@ match:
 		actionType := currentRule.Action().Type()
 		if actionType == C.RuleActionTypeRoute ||
 			actionType == C.RuleActionTypeReject ||
-			actionType == C.RuleActionTypeHijackDNS ||
-			(actionType == C.RuleActionTypeSniff && preMatch) {
+			actionType == C.RuleActionTypeHijackDNS {
 			selectedRule = currentRule
 			selectedRuleIndex = currentRuleIndex
 			break match