Bump version

The cache deduplication in Client.Exchange uses a channel-based lock
per DNS question. Waiting goroutines blocked on <-cond without context
awareness, causing them to accumulate indefinitely when the owning
goroutine's transport call stalls. Add select on ctx.Done() so waiters
respect context cancellation and timeouts.

.github/setup_go_for_windows7.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-VERSION="1.25.5"
+VERSION="1.25.7"
 
 mkdir -p $HOME/go
 cd $HOME/go

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -110,7 +110,7 @@ jobs:
         if: ${{ ! (matrix.legacy_win7 || matrix.legacy_go124) }}
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Setup Go 1.24
         if: matrix.legacy_go124
         uses: actions/setup-go@v5
@@ -300,7 +300,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -380,7 +380,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -479,7 +479,7 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Set tag
         if: matrix.if
         run: |-

.github/workflows/lint.yml

@@ -32,7 +32,7 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v8
         with:
-          version: v2.4.0
+          version: latest
           args: --timeout=30m
           install-mode: binary
           verify: false

.github/workflows/linux.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -71,7 +71,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.5
+          go-version: ^1.25.7
       - name: Setup Android NDK
         if: matrix.os == 'android'
         uses: nttld/setup-ndk@v1

Makefile

@@ -38,7 +38,7 @@ fmt:
 	@gci write --custom-order -s standard -s "prefix(github.com/sagernet/)" -s "default" .
 
 fmt_install:
-	go install -v mvdan.cc/gofumpt@v0.8.0
+	go install -v mvdan.cc/gofumpt@latest
 	go install -v github.com/daixiang0/gci@latest
 
 lint:
@@ -49,7 +49,7 @@ lint:
 	GOOS=freebsd golangci-lint run ./...
 
 lint_install:
-	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.4.0
+	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 
 proto:
 	@go run ./cmd/internal/protogen

common/sniff/quic.go

@@ -303,8 +303,6 @@ find:
 	metadata.Protocol = C.ProtocolQUIC
 	fingerprint, err := ja3.Compute(buffer.Bytes())
 	if err != nil {
-		metadata.Protocol = C.ProtocolQUIC
-		metadata.Client = C.ClientChromium
 		metadata.SniffContext = fragments
 		return E.Cause1(ErrNeedMoreData, err)
 	}
@@ -334,7 +332,7 @@ find:
 		}
 
 		if count(frameTypeList, frameTypeCrypto) > 1 || count(frameTypeList, frameTypePing) > 0 {
-			if maybeUQUIC(fingerprint) {
+			if isQUICGo(fingerprint) {
 				metadata.Client = C.ClientQUICGo
 			} else {
 				metadata.Client = C.ClientChromium

common/sniff/quic_blacklist.go

@@ -1,21 +1,29 @@
 package sniff
 
 import (
-	"crypto/tls"
-
 	"github.com/sagernet/sing-box/common/ja3"
 )
 
-// Chromium sends separate client hello packets, but UQUIC has not yet implemented this behavior
-// The cronet without this behavior does not have version 115
-var uQUICChrome115 = &ja3.ClientHello{
-	Version:             tls.VersionTLS12,
-	CipherSuites:        []uint16{4865, 4866, 4867},
-	Extensions:          []uint16{0, 10, 13, 16, 27, 43, 45, 51, 57, 17513},
-	EllipticCurves:      []uint16{29, 23, 24},
-	SignatureAlgorithms: []uint16{1027, 2052, 1025, 1283, 2053, 1281, 2054, 1537, 513},
-}
+const (
+	// X25519Kyber768Draft00 - post-quantum curve used by Go crypto/tls
+	x25519Kyber768Draft00 uint16 = 0x11EC // 4588
+	// renegotiation_info extension used by Go crypto/tls
+	extensionRenegotiationInfo uint16 = 0xFF01 // 65281
+)
 
-func maybeUQUIC(fingerprint *ja3.ClientHello) bool {
-	return !uQUICChrome115.Equals(fingerprint, true)
+// isQUICGo detects native quic-go by checking for Go crypto/tls specific features.
+// Note: uQUIC with Chromium mimicry cannot be reliably distinguished from real Chromium
+// since it uses the same TLS fingerprint, so it will be identified as Chromium.
+func isQUICGo(fingerprint *ja3.ClientHello) bool {
+	for _, curve := range fingerprint.EllipticCurves {
+		if curve == x25519Kyber768Draft00 {
+			return true
+		}
+	}
+	for _, ext := range fingerprint.Extensions {
+		if ext == extensionRenegotiationInfo {
+			return true
+		}
+	}
+	return false
 }

common/sniff/quic_capture_test.go

@@ -0,0 +1,188 @@
+package sniff_test
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/hex"
+	"errors"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/sagernet/quic-go"
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/sniff"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSniffQUICQuicGoFingerprint(t *testing.T) {
+	t.Parallel()
+	const testSNI = "test.example.com"
+
+	udpConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer udpConn.Close()
+
+	serverAddr := udpConn.LocalAddr().(*net.UDPAddr)
+	packetsChan := make(chan [][]byte, 1)
+
+	go func() {
+		var packets [][]byte
+		udpConn.SetReadDeadline(time.Now().Add(3 * time.Second))
+		for i := 0; i < 10; i++ {
+			buf := make([]byte, 2048)
+			n, _, err := udpConn.ReadFromUDP(buf)
+			if err != nil {
+				break
+			}
+			packets = append(packets, buf[:n])
+		}
+		packetsChan <- packets
+	}()
+
+	clientConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	tlsConfig := &tls.Config{
+		ServerName:         testSNI,
+		InsecureSkipVerify: true,
+		NextProtos:         []string{"h3"},
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	_, _ = quic.Dial(ctx, clientConn, serverAddr, tlsConfig, &quic.Config{})
+
+	select {
+	case packets := <-packetsChan:
+		t.Logf("Captured %d packets", len(packets))
+
+		var metadata adapter.InboundContext
+		for i, pkt := range packets {
+			err := sniff.QUICClientHello(context.Background(), &metadata, pkt)
+			t.Logf("Packet %d: err=%v, domain=%s, client=%s", i, err, metadata.Domain, metadata.Client)
+			if metadata.Domain != "" {
+				break
+			}
+		}
+
+		t.Logf("\n=== quic-go TLS Fingerprint Analysis ===")
+		t.Logf("Domain: %s", metadata.Domain)
+		t.Logf("Client: %s", metadata.Client)
+		t.Logf("Protocol: %s", metadata.Protocol)
+
+		// The client should be identified as quic-go, not chromium
+		// Current issue: it's being identified as chromium
+		if metadata.Client == "chromium" {
+			t.Log("WARNING: quic-go is being misidentified as chromium!")
+		}
+
+	case <-time.After(5 * time.Second):
+		t.Fatal("Timeout")
+	}
+}
+
+func TestSniffQUICInitialFromQuicGo(t *testing.T) {
+	t.Parallel()
+
+	const testSNI = "test.example.com"
+
+	// Create UDP listener to capture ALL initial packets
+	udpConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer udpConn.Close()
+
+	serverAddr := udpConn.LocalAddr().(*net.UDPAddr)
+
+	// Channel to receive captured packets
+	packetsChan := make(chan [][]byte, 1)
+
+	// Start goroutine to capture packets
+	go func() {
+		var packets [][]byte
+		udpConn.SetReadDeadline(time.Now().Add(3 * time.Second))
+		for i := 0; i < 5; i++ { // Capture up to 5 packets
+			buf := make([]byte, 2048)
+			n, _, err := udpConn.ReadFromUDP(buf)
+			if err != nil {
+				break
+			}
+			packets = append(packets, buf[:n])
+		}
+		packetsChan <- packets
+	}()
+
+	// Create QUIC client connection (will fail but we capture the initial packet)
+	clientConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	tlsConfig := &tls.Config{
+		ServerName:         testSNI,
+		InsecureSkipVerify: true,
+		NextProtos:         []string{"h3"},
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	// This will fail (no server) but sends initial packet
+	_, _ = quic.Dial(ctx, clientConn, serverAddr, tlsConfig, &quic.Config{})
+
+	// Wait for captured packets
+	select {
+	case packets := <-packetsChan:
+		t.Logf("Captured %d QUIC packets", len(packets))
+
+		for i, packet := range packets {
+			t.Logf("Packet %d: length=%d, first 30 bytes: %x", i, len(packet), packet[:min(30, len(packet))])
+		}
+
+		// Test sniffer with first packet
+		if len(packets) > 0 {
+			var metadata adapter.InboundContext
+			err := sniff.QUICClientHello(context.Background(), &metadata, packets[0])
+
+			t.Logf("First packet sniff error: %v", err)
+			t.Logf("Protocol: %s", metadata.Protocol)
+			t.Logf("Domain: %s", metadata.Domain)
+			t.Logf("Client: %s", metadata.Client)
+
+			// If first packet needs more data, try with subsequent packets
+			// IMPORTANT: reuse metadata to accumulate CRYPTO fragments via SniffContext
+			if errors.Is(err, sniff.ErrNeedMoreData) && len(packets) > 1 {
+				t.Log("First packet needs more data, trying subsequent packets with shared context...")
+				for i := 1; i < len(packets); i++ {
+					// Reuse same metadata to accumulate fragments
+					err = sniff.QUICClientHello(context.Background(), &metadata, packets[i])
+					t.Logf("Packet %d sniff result: err=%v, domain=%s, sniffCtx=%v", i, err, metadata.Domain, metadata.SniffContext != nil)
+					if metadata.Domain != "" || (err != nil && !errors.Is(err, sniff.ErrNeedMoreData)) {
+						break
+					}
+				}
+			}
+
+			// Print hex dump for debugging
+			t.Logf("First packet hex:\n%s", hex.Dump(packets[0][:min(256, len(packets[0]))]))
+
+			// Log final results
+			t.Logf("Final: Protocol=%s, Domain=%s, Client=%s", metadata.Protocol, metadata.Domain, metadata.Client)
+
+			// Verify SNI extraction
+			if metadata.Domain == "" {
+				t.Errorf("Failed to extract SNI, expected: %s", testSNI)
+			} else {
+				require.Equal(t, testSNI, metadata.Domain, "SNI should match")
+			}
+
+			// Check client identification - quic-go should be identified as quic-go, not chromium
+			t.Logf("Client identified as: %s (expected: quic-go)", metadata.Client)
+		}
+
+	case <-time.After(5 * time.Second):
+		t.Fatal("Timeout waiting for QUIC packets")
+	}
+}

common/sniff/quic_test.go

@@ -19,7 +19,7 @@ func TestSniffQUICChromeNew(t *testing.T) {
 	var metadata adapter.InboundContext
 	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
 	require.Equal(t, metadata.Protocol, C.ProtocolQUIC)
-	require.Equal(t, metadata.Client, C.ClientChromium)
+	require.Empty(t, metadata.Client)
 	require.ErrorIs(t, err, sniff.ErrNeedMoreData)
 	pkt, err = hex.DecodeString("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")
 	require.NoError(t, err)
@@ -39,7 +39,7 @@ func TestSniffQUICChromium(t *testing.T) {
 	var metadata adapter.InboundContext
 	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
 	require.Equal(t, metadata.Protocol, C.ProtocolQUIC)
-	require.Equal(t, metadata.Client, C.ClientChromium)
+	require.Empty(t, metadata.Client)
 	require.ErrorIs(t, err, sniff.ErrNeedMoreData)
 	pkt, err = hex.DecodeString("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")
 	require.NoError(t, err)

dns/client.go

@@ -144,7 +144,11 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		if c.cache != nil {
 			cond, loaded := c.cacheLock.LoadOrStore(question, make(chan struct{}))
 			if loaded {
-				<-cond
+				select {
+				case <-cond:
+				case <-ctx.Done():
+					return nil, ctx.Err()
+				}
 			} else {
 				defer func() {
 					c.cacheLock.Delete(question)
@@ -154,7 +158,11 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		} else if c.transportCache != nil {
 			cond, loaded := c.transportCacheLock.LoadOrStore(question, make(chan struct{}))
 			if loaded {
-				<-cond
+				select {
+				case <-cond:
+				case <-ctx.Done():
+					return nil, ctx.Err()
+				}
 			} else {
 				defer func() {
 					c.transportCacheLock.Delete(question)

dns/transport/dhcp/dhcp.go

@@ -243,6 +243,7 @@ func (t *Transport) fetchServersResponse(iface *control.Interface, packetConn ne
 	defer buffer.Release()
 
 	for {
+		buffer.Reset()
 		_, _, err := buffer.ReadPacketFrom(packetConn)
 		if err != nil {
 			if errors.Is(err, io.ErrShortBuffer) {

docs/changelog.md

@@ -2,6 +2,51 @@
 icon: material/alert-decagram
 ---
 
+#### 1.12.21
+
+* Fixes and improvements
+
+#### 1.12.20
+
+* Fixes and improvements
+
+#### 1.12.19
+
+* Fixes and improvements
+
+#### 1.12.18
+
+* Add fallback routing rule for `auto_redirect` **1**
+* Fixes and improvements
+
+**1**:
+
+Adds a fallback iproute2 rule checked after system default rules (32766: main, 32767: default),
+ensuring traffic is routed to the sing-box table when no route is found in system tables.
+
+The rule index can be customized via `auto_redirect_iproute2_fallback_rule_index` (default: 32768).
+
+#### 1.12.17
+
+* Update uTLS to v1.8.2 **1**
+* Fixes and improvements
+
+**1**:
+
+This update fixes missing padding extension for Chrome 120+ fingerprints.
+
+Also, documentation has been updated with a warning about uTLS fingerprinting vulnerabilities.
+uTLS is not recommended for censorship circumvention due to fundamental architectural limitations;
+use NaiveProxy instead for TLS fingerprint resistance.
+
+#### 1.12.16
+
+* Fixes and improvements
+
+#### 1.12.15
+
+* Fixes and improvements
+
 #### 1.12.14
 
 * Fixes and improvements

docs/configuration/inbound/shadowsocks.md

@@ -9,6 +9,7 @@
 
   "method": "2022-blake3-aes-128-gcm",
   "password": "8JCsPssfgS8tiRwiMlhARg==",
+  "managed": false,
   "multiplex": {}
 }
 ```
@@ -86,6 +87,10 @@ Both if empty.
 | 2022 methods  | `sing-box generate rand --base64 <Key Length>` |
 | other methods | any string                                     |
 
+#### managed
+
+Defaults to `false`. Enable this when the inbound is managed by the [SSM API](/configuration/service/ssm-api) for dynamic user.
+
 #### multiplex
 
 See [Multiplex](/configuration/shared/multiplex#inbound) for details.

docs/configuration/inbound/shadowsocks.zh.md

@@ -9,6 +9,7 @@
 
   "method": "2022-blake3-aes-128-gcm",
   "password": "8JCsPssfgS8tiRwiMlhARg==",
+  "managed": false,
   "multiplex": {}
 }
 ```
@@ -86,6 +87,10 @@ See [Listen Fields](/configuration/shared/listen/) for details.
 | 2022 methods  | `sing-box generate rand --base64 <密钥长度>` |
 | other methods | 任意字符串                                    |
 
+#### managed
+
+默认为 `false`。当该入站需要由 [SSM API](/zh/configuration/service/ssm-api) 管理用户时必须启用此字段。
+
 #### multiplex
 
 参阅 [多路复用](/zh/configuration/shared/multiplex#inbound)。

docs/configuration/inbound/tun.md

@@ -2,6 +2,10 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.12.18"
+
+    :material-plus: [auto_redirect_iproute2_fallback_rule_index](#auto_redirect_iproute2_fallback_rule_index)
+
 !!! quote "Changes in sing-box 1.12.0"
 
     :material-plus: [loopback_address](#loopback_address)
@@ -63,6 +67,7 @@ icon: material/new-box
   "auto_redirect": true,
   "auto_redirect_input_mark": "0x2023",
   "auto_redirect_output_mark": "0x2024",
+  "auto_redirect_iproute2_fallback_rule_index": 32768,
   "loopback_address": [
     "10.7.0.1"
   ],
@@ -278,6 +283,17 @@ Connection output mark used by `auto_redirect`.
 
 `0x2024` is used by default.
 
+#### auto_redirect_iproute2_fallback_rule_index
+
+!!! question "Since sing-box 1.12.18"
+
+Linux iproute2 fallback rule index generated by `auto_redirect`.
+
+This rule is checked after system default rules (32766: main, 32767: default),
+routing traffic to the sing-box table only when no route is found in system tables.
+
+`32768` is used by default.
+
 #### loopback_address
 
 !!! question "Since sing-box 1.12.0"

docs/configuration/inbound/tun.zh.md

@@ -2,6 +2,10 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.12.18 中的更改"
+
+    :material-plus: [auto_redirect_iproute2_fallback_rule_index](#auto_redirect_iproute2_fallback_rule_index)
+
 !!! quote "sing-box 1.12.0 中的更改"
 
     :material-plus: [loopback_address](#loopback_address)
@@ -63,6 +67,7 @@ icon: material/new-box
   "auto_redirect": true,
   "auto_redirect_input_mark": "0x2023",
   "auto_redirect_output_mark": "0x2024",
+  "auto_redirect_iproute2_fallback_rule_index": 32768,
   "loopback_address": [
     "10.7.0.1"
   ],
@@ -277,6 +282,17 @@ tun 接口的 IPv6 前缀。
 
 默认使用 `0x2024`。
 
+#### auto_redirect_iproute2_fallback_rule_index
+
+!!! question "自 sing-box 1.12.18 起"
+
+`auto_redirect` 生成的 iproute2 回退规则索引。
+
+此规则在系统默认规则（32766: main，32767: default）之后检查，
+仅当系统路由表中未找到路由时才将流量路由到 sing-box 路由表。
+
+默认使用 `32768`。
+
 #### loopback_address
 
 !!! question "自 sing-box 1.12.0 起"

docs/configuration/shared/tls.md

@@ -230,9 +230,18 @@ The path to the server private key, in PEM format.
 
 ==Client only==
 
-!!! failure ""
-    
-    There is no evidence that GFW detects and blocks servers based on TLS client fingerprinting, and using an imperfect emulation that has not been security reviewed could pose security risks.
+!!! failure "Not Recommended"
+
+    uTLS has had repeated fingerprinting vulnerabilities discovered by researchers.
+
+    uTLS is a Go library that attempts to imitate browser TLS fingerprints by copying
+    ClientHello structure. However, browsers use completely different TLS stacks
+    (Chrome uses BoringSSL, Firefox uses NSS) with distinct implementation behaviors
+    that cannot be replicated by simply copying the handshake format, making detection possible.
+    Additionally, the library lacks active maintenance and has poor code quality,
+    making it unsuitable for censorship circumvention.
+
+    For TLS fingerprint resistance, use [NaiveProxy](/configuration/inbound/naive/) instead.
 
 uTLS is a fork of "crypto/tls", which provides ClientHello fingerprinting resistance.
 

docs/configuration/shared/tls.zh.md

@@ -220,9 +220,16 @@ TLS 版本值：
 
 ==仅客户端==
 
-!!! failure ""
+!!! failure "不推荐"
 
-    没有证据表明 GFW 根据 TLS 客户端指纹检测并阻止服务器，并且，使用一个未经安全审查的不完美模拟可能带来安全隐患。
+    uTLS 已被研究人员多次发现其指纹可被识别的漏洞。
+
+    uTLS 是一个试图通过复制 ClientHello 结构来模仿浏览器 TLS 指纹的 Go 库。
+    然而，浏览器使用完全不同的 TLS 实现（Chrome 使用 BoringSSL，Firefox 使用 NSS），
+    其实现行为无法通过简单复制握手格式来复现，其行为细节必然存在差异，使得检测成为可能。
+    此外，此库缺乏积极维护，且代码质量较差，不建议用于反审查场景。
+
+    如需 TLS 指纹抵抗，请改用 [NaiveProxy](/configuration/inbound/naive/)。
 
 uTLS 是 "crypto/tls" 的一个分支，它提供了 ClientHello 指纹识别阻力。
 

docs/manual/proxy-protocol/trojan.md

@@ -4,8 +4,7 @@ icon: material/horse
 
 # Trojan
 
-Torjan is the most commonly used TLS proxy made in China. It can be used in various combinations,
-but only the combination of uTLS and multiplexing is recommended.
+Trojan is the most commonly used TLS proxy made in China. It can be used in various combinations.
 
 | Protocol and implementation combination | Specification                                                        | Resists passive detection | Resists active probes |
 |-----------------------------------------|----------------------------------------------------------------------|---------------------------|-----------------------|
@@ -140,11 +139,7 @@ but only the combination of uTLS and multiplexing is recommended.
           "password": "password",
           "tls": {
             "enabled": true,
-            "server_name": "example.org",
-            "utls": {
-              "enabled": true,
-              "fingerprint": "firefox"
-            }
+            "server_name": "example.org"
           },
           "multiplex": {
             "enabled": true
@@ -171,11 +166,7 @@ but only the combination of uTLS and multiplexing is recommended.
           "tls": {
             "enabled": true,
             "server_name": "example.org",
-            "certificate_path": "/path/to/certificate.pem",
-            "utls": {
-              "enabled": true,
-              "fingerprint": "firefox"
-            }
+            "certificate_path": "/path/to/certificate.pem"
           },
           "multiplex": {
             "enabled": true
@@ -198,11 +189,7 @@ but only the combination of uTLS and multiplexing is recommended.
           "tls": {
             "enabled": true,
             "server_name": "example.org",
-            "insecure": true,
-            "utls": {
-              "enabled": true,
-              "fingerprint": "firefox"
-            }
+            "insecure": true
           },
           "multiplex": {
             "enabled": true

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/libdns/cloudflare v0.2.2-0.20250708034226-c574dccb31a6
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	github.com/metacubex/tfo-go v0.0.0-20250921095601-b102db4216c0
-	github.com/metacubex/utls v1.8.3
+	github.com/metacubex/utls v1.8.4
 	github.com/mholt/acmez/v3 v3.1.2
 	github.com/miekg/dns v1.1.67
 	github.com/oschwald/maxminddb-golang v1.13.1
@@ -27,15 +27,15 @@ require (
 	github.com/sagernet/gomobile v0.1.8
 	github.com/sagernet/gvisor v0.0.0-20250325023245-7a9c0f5725fb
 	github.com/sagernet/quic-go v0.52.0-sing-box-mod.3
-	github.com/sagernet/sing v0.7.14
-	github.com/sagernet/sing-mux v0.3.3
-	github.com/sagernet/sing-quic v0.5.2-0.20250909083218-00a55617c0fb
+	github.com/sagernet/sing v0.7.18
+	github.com/sagernet/sing-mux v0.3.4
+	github.com/sagernet/sing-quic v0.5.3
 	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 v0.7.3
+	github.com/sagernet/sing-tun v0.7.11
 	github.com/sagernet/sing-vmess v0.2.7
-	github.com/sagernet/smux v1.5.34-mod.2
+	github.com/sagernet/smux v1.5.50-sing-box-mod.1
 	github.com/sagernet/tailscale v1.80.3-sing-box-1.12-mod.2
 	github.com/sagernet/wireguard-go v0.0.1-beta.7
 	github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854

go.sum

@@ -28,7 +28,6 @@ github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6N
 github.com/cretz/bine v0.2.0 h1:8GiDRGlTgz+o8H9DSnsl+5MeBK4HsExxgl6WgzOCuZo=
 github.com/cretz/bine v0.2.0/go.mod h1:WU4o9QR9wWp8AVKtTM1XD5vUHkEqnf2vVSo6dBqbetI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dblohm7/wingoes v0.0.0-20240119213807-a09d6be7affa h1:h8TfIT1xc8FWbwwpmHn1J5i43Y0uZP97GqasGCzSRJk=
@@ -124,8 +123,8 @@ github.com/mdlayher/socket v0.5.1 h1:VZaqt6RkGkt2OE9l3GcC6nZkqD3xKeQLyfleW/uBcos
 github.com/mdlayher/socket v0.5.1/go.mod h1:TjPLHI1UgwEv5J1B5q0zTZq12A/6H7nKmtTanQE37IQ=
 github.com/metacubex/tfo-go v0.0.0-20250921095601-b102db4216c0 h1:Ui+/2s5Qz0lSnDUBmEL12M5Oi/PzvFxGTNohm8ZcsmE=
 github.com/metacubex/tfo-go v0.0.0-20250921095601-b102db4216c0/go.mod h1:l9oLnLoEXyGZ5RVLsh7QCC5XsouTUyKk4F2nLm2DHLw=
-github.com/metacubex/utls v1.8.3 h1:0m/yCxm3SK6kWve2lKiFb1pue1wHitJ8sQQD4Ikqde4=
-github.com/metacubex/utls v1.8.3/go.mod h1:kncGGVhFaoGn5M3pFe3SXhZCzsbCJayNOH4UEqTKTko=
+github.com/metacubex/utls v1.8.4 h1:HmL9nUApDdWSkgUyodfwF6hSjtiwCGGdyhaSpEejKpg=
+github.com/metacubex/utls v1.8.4/go.mod h1:kncGGVhFaoGn5M3pFe3SXhZCzsbCJayNOH4UEqTKTko=
 github.com/mholt/acmez/v3 v3.1.2 h1:auob8J/0FhmdClQicvJvuDavgd5ezwLBfKuYmynhYzc=
 github.com/mholt/acmez/v3 v3.1.2/go.mod h1:L1wOU06KKvq7tswuMDwKdcHeKpFFgkppZy/y0DFxagQ=
 github.com/miekg/dns v1.1.67 h1:kg0EHj0G4bfT5/oOys6HhZw4vmMlnoZ+gDu8tJ/AlI0=
@@ -166,25 +165,24 @@ github.com/sagernet/nftables v0.3.0-beta.4 h1:kbULlAwAC3jvdGAC1P5Fa3GSxVwQJibNen
 github.com/sagernet/nftables v0.3.0-beta.4/go.mod h1:OQXAjvjNGGFxaTgVCSTRIhYB5/llyVDeapVoENYBDS8=
 github.com/sagernet/quic-go v0.52.0-sing-box-mod.3 h1:ySqffGm82rPqI1TUPqmtHIYd12pfEGScygnOxjTL56w=
 github.com/sagernet/quic-go v0.52.0-sing-box-mod.3/go.mod h1:OV+V5kEBb8kJS7k29MzDu6oj9GyMc7HA07sE1tedxz4=
-github.com/sagernet/sing v0.6.9/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
-github.com/sagernet/sing v0.7.14 h1:5QQRDCUvYNOMyVp3LuK/hYEBAIv0VsbD3x/l9zH467s=
-github.com/sagernet/sing v0.7.14/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
-github.com/sagernet/sing-mux v0.3.3 h1:YFgt9plMWzH994BMZLmyKL37PdIVaIilwP0Jg+EcLfw=
-github.com/sagernet/sing-mux v0.3.3/go.mod h1:pht8iFY4c9Xltj7rhVd208npkNaeCxzyXCgulDPLUDA=
-github.com/sagernet/sing-quic v0.5.2-0.20250909083218-00a55617c0fb h1:5Wx3XeTiKrrrcrAky7Hc1bO3CGxrvho2Vu5b/adlEIM=
-github.com/sagernet/sing-quic v0.5.2-0.20250909083218-00a55617c0fb/go.mod h1:evP1e++ZG8TJHVV5HudXV4vWeYzGfCdF4HwSJZcdqkI=
+github.com/sagernet/sing v0.7.18 h1:iZHkaru1/MoHugx3G+9S3WG4owMewKO/KvieE2Pzk4E=
+github.com/sagernet/sing v0.7.18/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
+github.com/sagernet/sing-mux v0.3.4 h1:ZQplKl8MNXutjzbMVtWvWG31fohhgOfCuUZR4dVQ8+s=
+github.com/sagernet/sing-mux v0.3.4/go.mod h1:QvlKMyNBNrQoyX4x+gq028uPbLM2XeRpWtDsWBJbFSk=
+github.com/sagernet/sing-quic v0.5.3 h1:K937DKJN98xqyztijRkLJqbBfyV4rEZcYxFyP3EBikU=
+github.com/sagernet/sing-quic v0.5.3/go.mod h1:evP1e++ZG8TJHVV5HudXV4vWeYzGfCdF4HwSJZcdqkI=
 github.com/sagernet/sing-shadowsocks v0.2.8 h1:PURj5PRoAkqeHh2ZW205RWzN9E9RtKCVCzByXruQWfE=
 github.com/sagernet/sing-shadowsocks v0.2.8/go.mod h1:lo7TWEMDcN5/h5B8S0ew+r78ZODn6SwVaFhvB6H+PTI=
 github.com/sagernet/sing-shadowsocks2 v0.2.1 h1:dWV9OXCeFPuYGHb6IRqlSptVnSzOelnqqs2gQ2/Qioo=
 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 v0.7.3 h1:MFnAir+l24ElEyxdfwtY8mqvUUL9nPnL9TDYLkOmVes=
-github.com/sagernet/sing-tun v0.7.3/go.mod h1:pUEjh9YHQ2gJT6Lk0TYDklh3WJy7lz+848vleGM3JPM=
+github.com/sagernet/sing-tun v0.7.11 h1:qB7jy8JKqXg73fYBsDkBSy4ulRSbLrFut0e+y+QPhqU=
+github.com/sagernet/sing-tun v0.7.11/go.mod h1:pUEjh9YHQ2gJT6Lk0TYDklh3WJy7lz+848vleGM3JPM=
 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/smux v1.5.50-sing-box-mod.1 h1:XkJcivBC9V4wBjiGXIXZ229aZCU1hzcbp6kSkkyQ478=
+github.com/sagernet/smux v1.5.50-sing-box-mod.1/go.mod h1:NjhsCEWedJm7eFLyhuBgIEzwfhRmytrUoiLluxs5Sk8=
 github.com/sagernet/tailscale v1.80.3-sing-box-1.12-mod.2 h1:MO7s4ni2bSfAOhcan2rdQSWCztkMXmqyg6jYPZp8bEE=
 github.com/sagernet/tailscale v1.80.3-sing-box-1.12-mod.2/go.mod h1:EBxXsWu4OH2ELbQLq32WoBeIubG8KgDrg4/Oaxjs6lI=
 github.com/sagernet/wireguard-go v0.0.1-beta.7 h1:ltgBwYHfr+9Wz1eG59NiWnHrYEkDKHG7otNZvu85DXI=
@@ -196,14 +194,7 @@ github.com/spf13/cobra v1.9.1/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wx
 github.com/spf13/pflag v1.0.6 h1:jFzHGLGAlb3ruxLB8MhbI6A8+AQX/2eW4qeyNZXNp2o=
 github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/tailscale/certstore v0.1.1-0.20231202035212-d3fa0460f47e h1:PtWT87weP5LWHEY//SWsYkSO3RWRZo4OSWagh3YD2vQ=
@@ -284,7 +275,6 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20220817070843-5a390386f1f2/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
 golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=

option/options.go

@@ -5,6 +5,7 @@ import (
 	"context"
 
 	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
 	"github.com/sagernet/sing/common/json"
 )
 
@@ -60,37 +61,40 @@ func checkOptions(options *Options) error {
 
 func checkInbounds(inbounds []Inbound) error {
 	seen := make(map[string]bool)
-	for _, inbound := range inbounds {
-		if inbound.Tag == "" {
-			continue
+	for i, inbound := range inbounds {
+		tag := inbound.Tag
+		if tag == "" {
+			tag = F.ToString(i)
 		}
-		if seen[inbound.Tag] {
-			return E.New("duplicate inbound tag: ", inbound.Tag)
+		if seen[tag] {
+			return E.New("duplicate inbound tag: ", tag)
 		}
-		seen[inbound.Tag] = true
+		seen[tag] = true
 	}
 	return nil
 }
 
 func checkOutbounds(outbounds []Outbound, endpoints []Endpoint) error {
 	seen := make(map[string]bool)
-	for _, outbound := range outbounds {
-		if outbound.Tag == "" {
-			continue
+	for i, outbound := range outbounds {
+		tag := outbound.Tag
+		if tag == "" {
+			tag = F.ToString(i)
 		}
-		if seen[outbound.Tag] {
-			return E.New("duplicate outbound/endpoint tag: ", outbound.Tag)
+		if seen[tag] {
+			return E.New("duplicate outbound/endpoint tag: ", tag)
 		}
-		seen[outbound.Tag] = true
+		seen[tag] = true
 	}
-	for _, endpoint := range endpoints {
-		if endpoint.Tag == "" {
-			continue
+	for i, endpoint := range endpoints {
+		tag := endpoint.Tag
+		if tag == "" {
+			tag = F.ToString(i)
 		}
-		if seen[endpoint.Tag] {
-			return E.New("duplicate outbound/endpoint tag: ", endpoint.Tag)
+		if seen[tag] {
+			return E.New("duplicate outbound/endpoint tag: ", tag)
 		}
-		seen[endpoint.Tag] = true
+		seen[tag] = true
 	}
 	return nil
 }

option/tun.go

@@ -11,33 +11,34 @@ import (
 )
 
 type TunInboundOptions struct {
-	InterfaceName          string                           `json:"interface_name,omitempty"`
-	MTU                    uint32                           `json:"mtu,omitempty"`
-	Address                badoption.Listable[netip.Prefix] `json:"address,omitempty"`
-	AutoRoute              bool                             `json:"auto_route,omitempty"`
-	IPRoute2TableIndex     int                              `json:"iproute2_table_index,omitempty"`
-	IPRoute2RuleIndex      int                              `json:"iproute2_rule_index,omitempty"`
-	AutoRedirect           bool                             `json:"auto_redirect,omitempty"`
-	AutoRedirectInputMark  FwMark                           `json:"auto_redirect_input_mark,omitempty"`
-	AutoRedirectOutputMark FwMark                           `json:"auto_redirect_output_mark,omitempty"`
-	LoopbackAddress        badoption.Listable[netip.Addr]   `json:"loopback_address,omitempty"`
-	StrictRoute            bool                             `json:"strict_route,omitempty"`
-	RouteAddress           badoption.Listable[netip.Prefix] `json:"route_address,omitempty"`
-	RouteAddressSet        badoption.Listable[string]       `json:"route_address_set,omitempty"`
-	RouteExcludeAddress    badoption.Listable[netip.Prefix] `json:"route_exclude_address,omitempty"`
-	RouteExcludeAddressSet badoption.Listable[string]       `json:"route_exclude_address_set,omitempty"`
-	IncludeInterface       badoption.Listable[string]       `json:"include_interface,omitempty"`
-	ExcludeInterface       badoption.Listable[string]       `json:"exclude_interface,omitempty"`
-	IncludeUID             badoption.Listable[uint32]       `json:"include_uid,omitempty"`
-	IncludeUIDRange        badoption.Listable[string]       `json:"include_uid_range,omitempty"`
-	ExcludeUID             badoption.Listable[uint32]       `json:"exclude_uid,omitempty"`
-	ExcludeUIDRange        badoption.Listable[string]       `json:"exclude_uid_range,omitempty"`
-	IncludeAndroidUser     badoption.Listable[int]          `json:"include_android_user,omitempty"`
-	IncludePackage         badoption.Listable[string]       `json:"include_package,omitempty"`
-	ExcludePackage         badoption.Listable[string]       `json:"exclude_package,omitempty"`
-	UDPTimeout             UDPTimeoutCompat                 `json:"udp_timeout,omitempty"`
-	Stack                  string                           `json:"stack,omitempty"`
-	Platform               *TunPlatformOptions              `json:"platform,omitempty"`
+	InterfaceName                         string                           `json:"interface_name,omitempty"`
+	MTU                                   uint32                           `json:"mtu,omitempty"`
+	Address                               badoption.Listable[netip.Prefix] `json:"address,omitempty"`
+	AutoRoute                             bool                             `json:"auto_route,omitempty"`
+	IPRoute2TableIndex                    int                              `json:"iproute2_table_index,omitempty"`
+	IPRoute2RuleIndex                     int                              `json:"iproute2_rule_index,omitempty"`
+	AutoRedirect                          bool                             `json:"auto_redirect,omitempty"`
+	AutoRedirectInputMark                 FwMark                           `json:"auto_redirect_input_mark,omitempty"`
+	AutoRedirectOutputMark                FwMark                           `json:"auto_redirect_output_mark,omitempty"`
+	AutoRedirectIPRoute2FallbackRuleIndex int                              `json:"auto_redirect_iproute2_fallback_rule_index,omitempty"`
+	LoopbackAddress                       badoption.Listable[netip.Addr]   `json:"loopback_address,omitempty"`
+	StrictRoute                           bool                             `json:"strict_route,omitempty"`
+	RouteAddress                          badoption.Listable[netip.Prefix] `json:"route_address,omitempty"`
+	RouteAddressSet                       badoption.Listable[string]       `json:"route_address_set,omitempty"`
+	RouteExcludeAddress                   badoption.Listable[netip.Prefix] `json:"route_exclude_address,omitempty"`
+	RouteExcludeAddressSet                badoption.Listable[string]       `json:"route_exclude_address_set,omitempty"`
+	IncludeInterface                      badoption.Listable[string]       `json:"include_interface,omitempty"`
+	ExcludeInterface                      badoption.Listable[string]       `json:"exclude_interface,omitempty"`
+	IncludeUID                            badoption.Listable[uint32]       `json:"include_uid,omitempty"`
+	IncludeUIDRange                       badoption.Listable[string]       `json:"include_uid_range,omitempty"`
+	ExcludeUID                            badoption.Listable[uint32]       `json:"exclude_uid,omitempty"`
+	ExcludeUIDRange                       badoption.Listable[string]       `json:"exclude_uid_range,omitempty"`
+	IncludeAndroidUser                    badoption.Listable[int]          `json:"include_android_user,omitempty"`
+	IncludePackage                        badoption.Listable[string]       `json:"include_package,omitempty"`
+	ExcludePackage                        badoption.Listable[string]       `json:"exclude_package,omitempty"`
+	UDPTimeout                            UDPTimeoutCompat                 `json:"udp_timeout,omitempty"`
+	Stack                                 string                           `json:"stack,omitempty"`
+	Platform                              *TunPlatformOptions              `json:"platform,omitempty"`
 	InboundOptions
 
 	// Deprecated: removed

protocol/naive/inbound_conn.go

@@ -95,6 +95,7 @@ func (p *paddingConn) writeWithPadding(writer io.Writer, data []byte) (n int, er
 		binary.BigEndian.PutUint16(header, uint16(len(data)))
 		header[2] = byte(paddingSize)
 		common.Must1(buffer.Write(data))
+		buffer.Extend(paddingSize)
 		_, err = writer.Write(buffer.Bytes())
 		if err == nil {
 			n = len(data)

protocol/tailscale/endpoint.go

@@ -341,26 +341,42 @@ func (t *Endpoint) DialContext(ctx context.Context, network string, destination
 		}
 		return N.DialSerial(ctx, t, network, destination, destinationAddresses)
 	}
-	addr := tcpip.FullAddress{
+	addr4, addr6 := t.server.TailscaleIPs()
+	remoteAddr := tcpip.FullAddress{
 		NIC:  1,
 		Port: destination.Port,
 		Addr: addressFromAddr(destination.Addr),
 	}
+	var localAddr tcpip.FullAddress
 	var networkProtocol tcpip.NetworkProtocolNumber
 	if destination.IsIPv4() {
+		if !addr4.IsValid() {
+			return nil, E.New("missing Tailscale IPv4 address")
+		}
 		networkProtocol = header.IPv4ProtocolNumber
+		localAddr = tcpip.FullAddress{
+			NIC:  1,
+			Addr: addressFromAddr(addr4),
+		}
 	} else {
+		if !addr6.IsValid() {
+			return nil, E.New("missing Tailscale IPv6 address")
+		}
 		networkProtocol = header.IPv6ProtocolNumber
+		localAddr = tcpip.FullAddress{
+			NIC:  1,
+			Addr: addressFromAddr(addr6),
+		}
 	}
 	switch N.NetworkName(network) {
 	case N.NetworkTCP:
-		tcpConn, err := gonet.DialContextTCP(ctx, t.stack, addr, networkProtocol)
+		tcpConn, err := gonet.DialTCPWithBind(ctx, t.stack, localAddr, remoteAddr, networkProtocol)
 		if err != nil {
 			return nil, err
 		}
 		return tcpConn, nil
 	case N.NetworkUDP:
-		udpConn, err := gonet.DialUDP(t.stack, nil, &addr, networkProtocol)
+		udpConn, err := gonet.DialUDP(t.stack, &localAddr, &remoteAddr, networkProtocol)
 		if err != nil {
 			return nil, err
 		}

protocol/tun/inbound.go

@@ -174,6 +174,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	if ruleIndex == 0 {
 		ruleIndex = tun.DefaultIPRoute2RuleIndex
 	}
+	autoRedirectFallbackRuleIndex := options.AutoRedirectIPRoute2FallbackRuleIndex
+	if autoRedirectFallbackRuleIndex == 0 {
+		autoRedirectFallbackRuleIndex = tun.DefaultIPRoute2AutoRedirectFallbackRuleIndex
+	}
 	inputMark := uint32(options.AutoRedirectInputMark)
 	if inputMark == 0 {
 		inputMark = tun.DefaultAutoRedirectInputMark
@@ -192,32 +196,33 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 		logger:         logger,
 		inboundOptions: options.InboundOptions,
 		tunOptions: tun.Options{
-			Name:                     options.InterfaceName,
-			MTU:                      tunMTU,
-			GSO:                      enableGSO,
-			Inet4Address:             inet4Address,
-			Inet6Address:             inet6Address,
-			AutoRoute:                options.AutoRoute,
-			IPRoute2TableIndex:       tableIndex,
-			IPRoute2RuleIndex:        ruleIndex,
-			AutoRedirectInputMark:    inputMark,
-			AutoRedirectOutputMark:   outputMark,
-			Inet4LoopbackAddress:     common.Filter(options.LoopbackAddress, netip.Addr.Is4),
-			Inet6LoopbackAddress:     common.Filter(options.LoopbackAddress, netip.Addr.Is6),
-			StrictRoute:              options.StrictRoute,
-			IncludeInterface:         options.IncludeInterface,
-			ExcludeInterface:         options.ExcludeInterface,
-			Inet4RouteAddress:        inet4RouteAddress,
-			Inet6RouteAddress:        inet6RouteAddress,
-			Inet4RouteExcludeAddress: inet4RouteExcludeAddress,
-			Inet6RouteExcludeAddress: inet6RouteExcludeAddress,
-			IncludeUID:               includeUID,
-			ExcludeUID:               excludeUID,
-			IncludeAndroidUser:       options.IncludeAndroidUser,
-			IncludePackage:           options.IncludePackage,
-			ExcludePackage:           options.ExcludePackage,
-			InterfaceMonitor:         networkManager.InterfaceMonitor(),
-			EXP_MultiPendingPackets:  multiPendingPackets,
+			Name:                                  options.InterfaceName,
+			MTU:                                   tunMTU,
+			GSO:                                   enableGSO,
+			Inet4Address:                          inet4Address,
+			Inet6Address:                          inet6Address,
+			AutoRoute:                             options.AutoRoute,
+			IPRoute2TableIndex:                    tableIndex,
+			IPRoute2RuleIndex:                     ruleIndex,
+			IPRoute2AutoRedirectFallbackRuleIndex: autoRedirectFallbackRuleIndex,
+			AutoRedirectInputMark:                 inputMark,
+			AutoRedirectOutputMark:                outputMark,
+			Inet4LoopbackAddress:                  common.Filter(options.LoopbackAddress, netip.Addr.Is4),
+			Inet6LoopbackAddress:                  common.Filter(options.LoopbackAddress, netip.Addr.Is6),
+			StrictRoute:                           options.StrictRoute,
+			IncludeInterface:                      options.IncludeInterface,
+			ExcludeInterface:                      options.ExcludeInterface,
+			Inet4RouteAddress:                     inet4RouteAddress,
+			Inet6RouteAddress:                     inet6RouteAddress,
+			Inet4RouteExcludeAddress:              inet4RouteExcludeAddress,
+			Inet6RouteExcludeAddress:              inet6RouteExcludeAddress,
+			IncludeUID:                            includeUID,
+			ExcludeUID:                            excludeUID,
+			IncludeAndroidUser:                    options.IncludeAndroidUser,
+			IncludePackage:                        options.IncludePackage,
+			ExcludePackage:                        options.ExcludePackage,
+			InterfaceMonitor:                      networkManager.InterfaceMonitor(),
+			EXP_MultiPendingPackets:               multiPendingPackets,
 		},
 		udpTimeout:        udpTimeout,
 		stack:             options.Stack,
@@ -319,7 +324,6 @@ func (t *Inbound) Start(stage adapter.StartStage) error {
 			t.tunOptions.Name = tun.CalculateInterfaceName("")
 		}
 		if t.platformInterface == nil {
-			t.routeAddressSet = common.FlatMap(t.routeRuleSet, adapter.RuleSet.ExtractIPSet)
 			for _, routeRuleSet := range t.routeRuleSet {
 				ipSets := routeRuleSet.ExtractIPSet()
 				if len(ipSets) == 0 {
@@ -331,7 +335,6 @@ func (t *Inbound) Start(stage adapter.StartStage) error {
 					t.routeRuleSetCallback = append(t.routeRuleSetCallback, routeRuleSet.RegisterCallback(t.updateRouteAddressSet))
 				}
 			}
-			t.routeExcludeAddressSet = common.FlatMap(t.routeExcludeRuleSet, adapter.RuleSet.ExtractIPSet)
 			for _, routeExcludeRuleSet := range t.routeExcludeRuleSet {
 				ipSets := routeExcludeRuleSet.ExtractIPSet()
 				if len(ipSets) == 0 {

transport/v2rayquic/stream.go

@@ -14,11 +14,13 @@ type StreamWrapper struct {
 
 func (s *StreamWrapper) Read(p []byte) (n int, err error) {
 	n, err = s.Stream.Read(p)
+	//nolint:staticcheck
 	return n, baderror.WrapQUIC(err)
 }
 
 func (s *StreamWrapper) Write(p []byte) (n int, err error) {
 	n, err = s.Stream.Write(p)
+	//nolint:staticcheck
 	return n, baderror.WrapQUIC(err)
 }