From d1fbabaef3a0672ac223628f93e7d0fc67d2a3ea Mon Sep 17 00:00:00 2001
From: Vincent Loeng <173226116+Vincent-Loeng@users.noreply.github.com.>
Date: Tue, 27 May 2025 22:09:46 +0800
Subject: [PATCH] Add fib_index option for FreeBSD

---
 option/tun.go           | 1 +
 protocol/tun/inbound.go | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/option/tun.go b/option/tun.go
index 9263dd16..48bebf65 100644
--- a/option/tun.go
+++ b/option/tun.go
@@ -17,6 +17,7 @@ type TunInboundOptions struct {
 	AutoRoute              bool                             `json:"auto_route,omitempty"`
 	IPRoute2TableIndex     int                              `json:"iproute2_table_index,omitempty"`
 	IPRoute2RuleIndex      int                              `json:"iproute2_rule_index,omitempty"`
+	FIBIndex               int                              `json:"fib_index,omitempty"`
 	AutoRedirect           bool                             `json:"auto_redirect,omitempty"`
 	AutoRedirectInputMark  FwMark                           `json:"auto_redirect_input_mark,omitempty"`
 	AutoRedirectOutputMark FwMark                           `json:"auto_redirect_output_mark,omitempty"`
diff --git a/protocol/tun/inbound.go b/protocol/tun/inbound.go
index 7c80ebba..459405d1 100644
--- a/protocol/tun/inbound.go
+++ b/protocol/tun/inbound.go
@@ -164,6 +164,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	if ruleIndex == 0 {
 		ruleIndex = tun.DefaultIPRoute2RuleIndex
 	}
+	fibIndex := options.FIBIndex
+	if fibIndex == 0 {
+		fibIndex = tun.DefaultFIBIndex
+	}
 	inputMark := uint32(options.AutoRedirectInputMark)
 	if inputMark == 0 {
 		inputMark = tun.DefaultAutoRedirectInputMark
@@ -188,6 +192,7 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 			AutoRoute:                options.AutoRoute,
 			IPRoute2TableIndex:       tableIndex,
 			IPRoute2RuleIndex:        ruleIndex,
+			FIBIndex:                 fibIndex,
 			AutoRedirectInputMark:    inputMark,
 			AutoRedirectOutputMark:   outputMark,
 			StrictRoute:              options.StrictRoute,