Chore: update dependencies

adapter/outbound/vless.go

@@ -152,7 +152,7 @@ func (v *Vless) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 func (v *Vless) StreamPacketConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	// vmess use stream-oriented udp with a special address, so we needs a net.UDPAddr
 	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return nil, errors.New("can't resolve ip")
 		}
@@ -245,7 +245,7 @@ func (v *Vless) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 	if v.transport != nil && len(opts) == 0 {
 		// vless use stream-oriented udp with a special address, so we needs a net.UDPAddr
 		if !metadata.Resolved() {
-			ip, err := resolver.ResolveIP(metadata.Host)
+			ip, err := resolver.ResolveFirstIP(metadata.Host)
 			if err != nil {
 				return nil, errors.New("can't resolve ip")
 			}

adapter/outbound/vmess.go

@@ -203,7 +203,7 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 func (v *Vmess) StreamPacketConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	// vmess use stream-oriented udp with a special address, so we needs a net.UDPAddr
 	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return c, fmt.Errorf("can't resolve ip: %w", err)
 		}
@@ -255,7 +255,7 @@ func (v *Vmess) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 	if v.transport != nil && len(opts) == 0 {
 		// vmess use stream-oriented udp with a special address, so we needs a net.UDPAddr
 		if !metadata.Resolved() {
-			ip, err := resolver.ResolveIP(metadata.Host)
+			ip, err := resolver.ResolveFirstIP(metadata.Host)
 			if err != nil {
 				return nil, fmt.Errorf("can't resolve ip: %w", err)
 			}

adapter/outboundgroup/common.go

@@ -3,6 +3,8 @@ package outboundgroup
 import (
 	"time"
 
+	"github.com/Dreamacro/clash/adapter"
+	"github.com/Dreamacro/clash/adapter/outbound"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/constant/provider"
 )
@@ -11,14 +13,19 @@ const (
 	defaultGetProxiesDuration = time.Second * 5
 )
 
+var defaultRejectProxy = adapter.NewProxy(outbound.NewReject())
+
 func getProvidersProxies(providers []provider.ProxyProvider, touch bool) []C.Proxy {
 	proxies := []C.Proxy{}
-	for _, provider := range providers {
+	for _, pd := range providers {
 		if touch {
-			proxies = append(proxies, provider.ProxiesWithTouch()...)
+			proxies = append(proxies, pd.ProxiesWithTouch()...)
 		} else {
-			proxies = append(proxies, provider.Proxies()...)
+			proxies = append(proxies, pd.Proxies()...)
 		}
 	}
+	if len(proxies) == 0 {
+		proxies = append(proxies, defaultRejectProxy)
+	}
 	return proxies
 }

adapter/outboundgroup/loadbalance.go

@@ -30,10 +30,8 @@ type LoadBalance struct {
 var errStrategy = errors.New("unsupported strategy")
 
 func parseStrategy(config map[string]any) string {
-	if elm, ok := config["strategy"]; ok {
+	if strategy, ok := config["strategy"].(string); ok {
-		if strategy, ok := elm.(string); ok {
+		return strategy
-			return strategy
-		}
 	}
 	return "consistent-hashing"
 }

adapter/outboundgroup/parser.go

@@ -78,30 +78,18 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 			return nil, errDuplicateProvider
 		}
 
-		// select don't need health check
+		hc, err := newHealthCheck(ps, groupOption)
-		if groupOption.Type == "select" || groupOption.Type == "relay" {
+		if err != nil {
-			hc := provider.NewHealthCheck(ps, "", 0, true)
+			return nil, err
-			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
-			if err != nil {
-				return nil, err
-			}
-
-			providers = append(providers, pd)
-			providersMap[groupName] = pd
-		} else {
-			if groupOption.URL == "" || groupOption.Interval == 0 {
-				return nil, errMissHealthCheck
-			}
-
-			hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
-			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
-			if err != nil {
-				return nil, err
-			}
-
-			providers = append(providers, pd)
-			providersMap[groupName] = pd
 		}
+
+		pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
+		if err != nil {
+			return nil, err
+		}
+
+		providers = append(providers, pd)
+		providersMap[groupName] = pd
 	}
 
 	if len(groupOption.Use) != 0 {
@@ -109,7 +97,12 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 		if err != nil {
 			return nil, err
 		}
-		providers = append(providers, list...)
+
+		if groupOption.Type == "fallback" {
+			providers = append(list, providers...)
+		} else {
+			providers = append(providers, list...)
+		}
 	}
 
 	var group C.ProxyAdapter
@@ -163,22 +156,18 @@ func getProviders(mapping map[string]types.ProxyProvider, groupOption *GroupComm
 		}
 
 		if filterRegx != nil {
-			var hc *provider.HealthCheck
+			hc, err := newHealthCheck([]C.Proxy{}, groupOption)
-			if groupOption.Type == "select" || groupOption.Type == "relay" {
+			if err != nil {
-				hc = provider.NewHealthCheck([]C.Proxy{}, "", 0, true)
+				return nil, err
-			} else {
-				if groupOption.URL == "" || groupOption.Interval == 0 {
-					return nil, errMissHealthCheck
-				}
-				hc = provider.NewHealthCheck([]C.Proxy{}, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
 			}
 
-			if _, ok = mapping[groupName]; ok {
+			gName := groupName
-				groupName += "->" + p.Name()
+			if _, ok = mapping[gName]; ok {
+				gName = groupName + " -> " + p.Name()
 			}
 
 			pd := p.(*provider.ProxySetProvider)
-			p = provider.NewProxyFilterProvider(groupName, pd, hc, filterRegx)
+			p = provider.NewProxyFilterProvider(gName, pd, hc, filterRegx)
 			pd.RegisterProvidersInUse(p)
 		}
 
@@ -186,3 +175,18 @@ func getProviders(mapping map[string]types.ProxyProvider, groupOption *GroupComm
 	}
 	return ps, nil
 }
+
+func newHealthCheck(ps []C.Proxy, groupOption *GroupCommonOption) (*provider.HealthCheck, error) {
+	var hc *provider.HealthCheck
+
+	// select don't need health check
+	if groupOption.Type == "select" || groupOption.Type == "relay" {
+		hc = provider.NewHealthCheck(ps, "", 0, true)
+	} else {
+		if groupOption.URL == "" || groupOption.Interval == 0 {
+			return nil, errMissHealthCheck
+		}
+		hc = provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
+	}
+	return hc, nil
+}

adapter/outboundgroup/selector.go

@@ -98,7 +98,11 @@ func (s *Selector) selectedProxy(touch bool) C.Proxy {
 }
 
 func NewSelector(option *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
-	selected := providers[0].Proxies()[0].Name()
+	selected := "REJECT"
+	if len(providers) != 0 && len(providers[0].Proxies()) != 0 {
+		selected = providers[0].Proxies()[0].Name()
+	}
+
 	return &Selector{
 		Base: outbound.NewBase(outbound.BaseOption{
 			Name:        option.Name,

adapter/outboundgroup/urltest.go

@@ -125,10 +125,8 @@ func parseURLTestOption(config map[string]any) []urlTestOption {
 	opts := []urlTestOption{}
 
 	// tolerance
-	if elm, ok := config["tolerance"]; ok {
+	if tolerance, ok := config["tolerance"].(int); ok {
-		if tolerance, ok := elm.(int); ok {
+		opts = append(opts, urlTestWithTolerance(uint16(tolerance)))
-			opts = append(opts, urlTestWithTolerance(uint16(tolerance)))
-		}
 	}
 
 	return opts

adapter/provider/fetcher.go

@@ -5,6 +5,7 @@ import (
 	"crypto/md5"
 	"os"
 	"path/filepath"
+	"regexp"
 	"time"
 
 	types "github.com/Dreamacro/clash/constant/provider"
@@ -14,6 +15,8 @@ import (
 var (
 	fileMode os.FileMode = 0o666
 	dirMode  os.FileMode = 0o755
+
+	commentRegx = regexp.MustCompile(`(.*#.*\n)`)
 )
 
 type parser[V any] func([]byte) (V, error)
@@ -168,6 +171,18 @@ func safeWrite(path string, buf []byte) error {
 	return os.WriteFile(path, buf, fileMode)
 }
 
+func removeComment(buf []byte) []byte {
+	arr := commentRegx.FindAllSubmatch(buf, -1)
+	for _, subs := range arr {
+		sub := subs[0]
+		if !bytes.HasPrefix(bytes.TrimLeft(sub, " 	"), []byte("#")) {
+			continue
+		}
+		buf = bytes.Replace(buf, sub, []byte(""), 1)
+	}
+	return buf
+}
+
 func newFetcher[V any](name string, interval time.Duration, vehicle types.Vehicle, parser parser[V], onUpdate func(V)) *fetcher[V] {
 	var ticker *time.Ticker
 	if interval != 0 {

adapter/provider/healthcheck.go

@@ -25,10 +25,16 @@ type HealthCheck struct {
 	interval  uint
 	lazy      bool
 	lastTouch *atomic.Int64
+	running   *atomic.Bool
 	done      chan struct{}
 }
 
 func (hc *HealthCheck) process() {
+	if hc.running.Load() {
+		return
+	}
+	hc.running.Store(true)
+
 	ticker := time.NewTicker(time.Duration(hc.interval) * time.Second)
 
 	go func() {
@@ -84,6 +90,10 @@ func (hc *HealthCheck) check() {
 }
 
 func (hc *HealthCheck) close() {
+	if !hc.running.Load() {
+		return
+	}
+	hc.running.Store(false)
 	hc.done <- struct{}{}
 }
 
@@ -94,6 +104,7 @@ func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool) *He
 		interval:  interval,
 		lazy:      lazy,
 		lastTouch: atomic.NewInt64(0),
+		running:   atomic.NewBool(false),
 		done:      make(chan struct{}, 1),
 	}
 }

adapter/provider/provider.go

@@ -234,7 +234,9 @@ func (pf *proxyFilterProvider) HealthCheck() {
 }
 
 func (pf *proxyFilterProvider) Update() error {
-	var proxies []C.Proxy
+	pf.healthCheck.close()
+
+	proxies := []C.Proxy{}
 	if pf.filter != nil {
 		for _, proxy := range pf.psd.Proxies() {
 			if !pf.filter.MatchString(proxy.Name()) {
@@ -248,6 +250,10 @@ func (pf *proxyFilterProvider) Update() error {
 
 	pf.proxies = proxies
 	pf.healthCheck.setProxy(proxies)
+
+	if len(proxies) != 0 && pf.healthCheck.auto() {
+		go pf.healthCheck.process()
+	}
 	return nil
 }
 
@@ -286,10 +292,6 @@ func NewProxyFilterProvider(name string, psd *ProxySetProvider, hc *HealthCheck,
 
 	_ = pd.Update()
 
-	if hc.auto() {
-		go hc.process()
-	}
-
 	wrapper := &ProxyFilterProvider{pd}
 	runtime.SetFinalizer(wrapper, stopProxyFilterProvider)
 	return wrapper
@@ -319,12 +321,13 @@ func proxiesParseAndFilter(filter string, filterReg *regexp.Regexp, forceCertVer
 
 		proxies := []C.Proxy{}
 		for idx, mapping := range schema.Proxies {
-			if name, ok := mapping["name"]; ok && len(filter) > 0 && !filterReg.MatchString(name.(string)) {
+			name, ok := mapping["name"].(string)
+			if ok && len(filter) > 0 && !filterReg.MatchString(name) {
 				continue
 			}
 
 			if prefixName != "" {
-				mapping["name"] = prefixName + mapping["name"].(string)
+				mapping["name"] = prefixName + name
 			}
 
 			proxy, err := adapter.ParseProxy(mapping, forceCertVerify)

adapter/provider/vehicle.go

@@ -103,7 +103,7 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 		return nil, err
 	}
 
-	return buf, nil
+	return removeComment(buf), nil
 }
 
 func NewHTTPVehicle(url string, path string, header http.Header) *HTTPVehicle {

common/cert/storage.go

@@ -2,6 +2,7 @@ package cert
 
 import (
 	"crypto/tls"
+	"sync"
 
 	"github.com/Dreamacro/clash/component/trie"
 )
@@ -9,10 +10,14 @@ import (
 // DomainTrieCertsStorage cache wildcard certificates
 type DomainTrieCertsStorage struct {
 	certsCache *trie.DomainTrie[*tls.Certificate]
+	lock       sync.RWMutex
 }
 
 // Get gets the certificate from the storage
 func (c *DomainTrieCertsStorage) Get(key string) (*tls.Certificate, bool) {
+	c.lock.RLock()
+	defer c.lock.RUnlock()
+
 	ca := c.certsCache.Search(key)
 	if ca == nil {
 		return nil, false
@@ -22,7 +27,9 @@ func (c *DomainTrieCertsStorage) Get(key string) (*tls.Certificate, bool) {
 
 // Set saves the certificate to the storage
 func (c *DomainTrieCertsStorage) Set(key string, cert *tls.Certificate) {
+	c.lock.Lock()
 	_ = c.certsCache.Insert(key, cert)
+	c.lock.Unlock()
 }
 
 func NewDomainTrieCertsStorage() *DomainTrieCertsStorage {

component/dialer/mark_linux.go

@@ -29,13 +29,13 @@ func bindMarkToControl(mark int, chain controlFn) controlFn {
 			return
 		}
 
-		return c.Control(func(fd uintptr) {
+		var innerErr error
-			switch network {
+		err = c.Control(func(fd uintptr) {
-			case "tcp4", "udp4":
+			innerErr = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, mark)
-				_ = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, mark)
-			case "tcp6", "udp6":
-				_ = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, mark)
-			}
 		})
+		if err == nil && innerErr != nil {
+			err = innerErr
+		}
+		return
 	}
 }

component/process/process.go

@@ -2,11 +2,7 @@ package process
 
 import (
 	"errors"
-	"net"
 	"net/netip"
-
-	"github.com/Dreamacro/clash/common/nnip"
-	C "github.com/Dreamacro/clash/constant"
 )
 
 var (
@@ -23,49 +19,3 @@ const (
 func FindProcessName(network string, srcIP netip.Addr, srcPort int) (string, error) {
 	return findProcessName(network, srcIP, srcPort)
 }
-
-func ShouldFindProcess(metadata *C.Metadata) bool {
-	if metadata.Process != "" {
-		return false
-	}
-	for _, ip := range localIPs {
-		if ip == metadata.SrcIP {
-			return true
-		}
-	}
-	return false
-}
-
-func AppendLocalIPs(ip ...netip.Addr) {
-	localIPs = append(ip, localIPs...)
-}
-
-func getLocalIPs() []netip.Addr {
-	ips := []netip.Addr{netip.IPv4Unspecified(), netip.IPv6Unspecified()}
-
-	netInterfaces, err := net.Interfaces()
-	if err != nil {
-		ips = append(ips, netip.AddrFrom4([4]byte{127, 0, 0, 1}), nnip.IpToAddr(net.IPv6loopback))
-		return ips
-	}
-
-	for i := 0; i < len(netInterfaces); i++ {
-		if (netInterfaces[i].Flags & net.FlagUp) != 0 {
-			adds, _ := netInterfaces[i].Addrs()
-
-			for _, address := range adds {
-				if ipNet, ok := address.(*net.IPNet); ok {
-					ips = append(ips, nnip.IpToAddr(ipNet.IP))
-				}
-			}
-		}
-	}
-
-	return ips
-}
-
-var localIPs []netip.Addr
-
-func init() {
-	localIPs = getLocalIPs()
-}

component/process/process_darwin.go

@@ -6,8 +6,6 @@ import (
 	"syscall"
 	"unsafe"
 
-	"github.com/Dreamacro/clash/common/nnip"
-
 	"golang.org/x/sys/unix"
 )
 
@@ -63,10 +61,10 @@ func findProcessName(network string, ip netip.Addr, port int) (string, error) {
 		switch {
 		case flag&0x1 > 0 && isIPv4:
 			// ipv4
-			srcIP = nnip.IpToAddr(buf[inp+76 : inp+80])
+			srcIP, _ = netip.AddrFromSlice(buf[inp+76 : inp+80])
 		case flag&0x2 > 0 && !isIPv4:
 			// ipv6
-			srcIP = nnip.IpToAddr(buf[inp+64 : inp+80])
+			srcIP, _ = netip.AddrFromSlice(buf[inp+64 : inp+80])
 		default:
 			continue
 		}

component/process/process_freebsd_amd64.go

@@ -10,7 +10,6 @@ import (
 	"syscall"
 	"unsafe"
 
-	"github.com/Dreamacro/clash/common/nnip"
 	"github.com/Dreamacro/clash/log"
 )
 
@@ -135,10 +134,10 @@ func (s *searcher) Search(buf []byte, ip netip.Addr, port uint16, isTCP bool) (u
 		switch {
 		case flag&0x1 > 0 && isIPv4:
 			// ipv4
-			srcIP = nnip.IpToAddr(buf[inp+s.ip : inp+s.ip+4])
+			srcIP, _ = netip.AddrFromSlice(buf[inp+s.ip : inp+s.ip+4])
 		case flag&0x2 > 0 && !isIPv4:
 			// ipv6
-			srcIP = nnip.IpToAddr(buf[inp+s.ip-12 : inp+s.ip+4])
+			srcIP, _ = netip.AddrFromSlice(buf[inp+s.ip-12 : inp+s.ip+4])
 		default:
 			continue
 		}

component/process/process_windows.go

@@ -7,7 +7,6 @@ import (
 	"syscall"
 	"unsafe"
 
-	"github.com/Dreamacro/clash/common/nnip"
 	"github.com/Dreamacro/clash/log"
 
 	"golang.org/x/sys/windows"
@@ -132,7 +131,7 @@ func (s *searcher) Search(b []byte, ip netip.Addr, port uint16) (uint32, error)
 			continue
 		}
 
-		srcIP := nnip.IpToAddr(row[s.ip : s.ip+s.ipSize])
+		srcIP, _ := netip.AddrFromSlice(row[s.ip : s.ip+s.ipSize])
 		// windows binds an unbound udp socket to 0.0.0.0/[::] while first sendto
 		if ip != srcIP && (!srcIP.IsUnspecified() || s.tcpState != -1) {
 			continue

component/resolver/resolver.go

@@ -37,17 +37,17 @@ var (
 )
 
 type Resolver interface {
-	ResolveIP(host string) (ip netip.Addr, err error)
+	ResolveIP(host string, random bool) (ip netip.Addr, err error)
-	ResolveIPv4(host string) (ip netip.Addr, err error)
+	ResolveIPv4(host string, random bool) (ip netip.Addr, err error)
-	ResolveIPv6(host string) (ip netip.Addr, err error)
+	ResolveIPv6(host string, random bool) (ip netip.Addr, err error)
 }
 
 // ResolveIPv4 with a host, return ipv4
 func ResolveIPv4(host string) (netip.Addr, error) {
-	return ResolveIPv4WithResolver(host, DefaultResolver)
+	return resolveIPv4(host, true)
 }
 
-func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPv4WithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if node := DefaultHosts.Search(host); node != nil {
 		if ip := node.Data; ip.Is4() {
 			return ip, nil
@@ -56,6 +56,7 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 
 	ip, err := netip.ParseAddr(host)
 	if err == nil {
+		ip = ip.Unmap()
 		if ip.Is4() {
 			return ip, nil
 		}
@@ -63,7 +64,7 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 	}
 
 	if r != nil {
-		return r.ResolveIPv4(host)
+		return r.ResolveIPv4(host, random)
 	}
 
 	if DefaultResolver == nil {
@@ -76,7 +77,11 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 			return netip.Addr{}, ErrIPNotFound
 		}
 
-		ip := ipAddrs[rand.Intn(len(ipAddrs))].To4()
+		index := 0
+		if random {
+			index = rand.Intn(len(ipAddrs))
+		}
+		ip := ipAddrs[index].To4()
 		if ip == nil {
 			return netip.Addr{}, ErrIPVersion
 		}
@@ -89,10 +94,10 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 
 // ResolveIPv6 with a host, return ipv6
 func ResolveIPv6(host string) (netip.Addr, error) {
-	return ResolveIPv6WithResolver(host, DefaultResolver)
+	return ResolveIPv6WithResolver(host, DefaultResolver, true)
 }
 
-func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPv6WithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if DisableIPv6 {
 		return netip.Addr{}, ErrIPv6Disabled
 	}
@@ -112,7 +117,7 @@ func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
 	}
 
 	if r != nil {
-		return r.ResolveIPv6(host)
+		return r.ResolveIPv6(host, random)
 	}
 
 	if DefaultResolver == nil {
@@ -125,25 +130,29 @@ func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
 			return netip.Addr{}, ErrIPNotFound
 		}
 
-		return netip.AddrFrom16(*(*[16]byte)(ipAddrs[rand.Intn(len(ipAddrs))])), nil
+		index := 0
+		if random {
+			index = rand.Intn(len(ipAddrs))
+		}
+		return netip.AddrFrom16(*(*[16]byte)(ipAddrs[index])), nil
 	}
 
 	return netip.Addr{}, ErrIPNotFound
 }
 
 // ResolveIPWithResolver same as ResolveIP, but with a resolver
-func ResolveIPWithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPWithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if node := DefaultHosts.Search(host); node != nil {
 		return node.Data, nil
 	}
 
 	if r != nil {
 		if DisableIPv6 {
-			return r.ResolveIPv4(host)
+			return r.ResolveIPv4(host, random)
 		}
-		return r.ResolveIP(host)
+		return r.ResolveIP(host, random)
 	} else if DisableIPv6 {
-		return ResolveIPv4(host)
+		return resolveIPv4(host, random)
 	}
 
 	ip, err := netip.ParseAddr(host)
@@ -165,13 +174,18 @@ func ResolveIPWithResolver(host string, r Resolver) (netip.Addr, error) {
 
 // ResolveIP with a host, return ip
 func ResolveIP(host string) (netip.Addr, error) {
-	return ResolveIPWithResolver(host, DefaultResolver)
+	return resolveIP(host, true)
+}
+
+// ResolveFirstIP with a host, return ip
+func ResolveFirstIP(host string) (netip.Addr, error) {
+	return resolveIP(host, false)
 }
 
 // ResolveIPv4ProxyServerHost proxies server host only
 func ResolveIPv4ProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPv4WithResolver(host, ProxyServerHostResolver)
+		return ResolveIPv4WithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIPv4(host)
 }
@@ -179,7 +193,7 @@ func ResolveIPv4ProxyServerHost(host string) (netip.Addr, error) {
 // ResolveIPv6ProxyServerHost proxies server host only
 func ResolveIPv6ProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPv6WithResolver(host, ProxyServerHostResolver)
+		return ResolveIPv6WithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIPv6(host)
 }
@@ -187,7 +201,15 @@ func ResolveIPv6ProxyServerHost(host string) (netip.Addr, error) {
 // ResolveProxyServerHost proxies server host only
 func ResolveProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPWithResolver(host, ProxyServerHostResolver)
+		return ResolveIPWithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIP(host)
 }
+
+func resolveIP(host string, random bool) (netip.Addr, error) {
+	return ResolveIPWithResolver(host, DefaultResolver, random)
+}
+
+func resolveIPv4(host string, random bool) (netip.Addr, error) {
+	return ResolveIPv4WithResolver(host, DefaultResolver, random)
+}

config/config.go

@@ -99,12 +99,13 @@ type Profile struct {
 
 // Tun config
 type Tun struct {
-	Enable              bool       `yaml:"enable" json:"enable"`
+	Enable              bool          `yaml:"enable" json:"enable"`
-	Device              string     `yaml:"device" json:"device"`
+	Device              string        `yaml:"device" json:"device"`
-	Stack               C.TUNStack `yaml:"stack" json:"stack"`
+	Stack               C.TUNStack    `yaml:"stack" json:"stack"`
-	DNSHijack           []C.DNSUrl `yaml:"dns-hijack" json:"dns-hijack"`
+	DNSHijack           []C.DNSUrl    `yaml:"dns-hijack" json:"dns-hijack"`
-	AutoRoute           bool       `yaml:"auto-route" json:"auto-route"`
+	AutoRoute           bool          `yaml:"auto-route" json:"auto-route"`
-	AutoDetectInterface bool       `yaml:"auto-detect-interface" json:"auto-detect-interface"`
+	AutoDetectInterface bool          `yaml:"auto-detect-interface" json:"auto-detect-interface"`
+	TunAddressPrefix    *netip.Prefix `yaml:"_" json:"_"`
 }
 
 // IPTables config

dns/client.go

@@ -36,7 +36,7 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (*D.Msg, error)
 		if c.r == nil {
 			return nil, fmt.Errorf("dns %s not a valid ip", c.host)
 		} else {
-			if ip, err = resolver.ResolveIPWithResolver(c.host, c.r); err != nil {
+			if ip, err = resolver.ResolveIPWithResolver(c.host, c.r, true); err != nil {
 				return nil, fmt.Errorf("use default dns resolve failed: %w", err)
 			}
 			c.host = ip.String()

dns/doh.go

@@ -94,7 +94,7 @@ func newDoHClient(url string, r *Resolver, proxyAdapter string) *dohClient {
 					return nil, err
 				}
 
-				ip, err := resolver.ResolveIPWithResolver(host, r)
+				ip, err := resolver.ResolveIPWithResolver(host, r, true)
 				if err != nil {
 					return nil, err
 				}

dns/resolver.go

@@ -21,6 +21,8 @@ import (
 	"golang.org/x/sync/singleflight"
 )
 
+var _ resolver.Resolver = (*Resolver)(nil)
+
 type dnsClient interface {
 	Exchange(m *D.Msg) (msg *D.Msg, err error)
 	ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error)
@@ -45,18 +47,18 @@ type Resolver struct {
 }
 
 // ResolveIP request with TypeA and TypeAAAA, priority return TypeA
-func (r *Resolver) ResolveIP(host string) (ip netip.Addr, err error) {
+func (r *Resolver) ResolveIP(host string, random bool) (ip netip.Addr, err error) {
 	ch := make(chan netip.Addr, 1)
 	go func() {
 		defer close(ch)
-		ip, err := r.resolveIP(host, D.TypeAAAA)
+		ip, err := r.resolveIP(host, D.TypeAAAA, random)
 		if err != nil {
 			return
 		}
 		ch <- ip
 	}()
 
-	ip, err = r.resolveIP(host, D.TypeA)
+	ip, err = r.resolveIP(host, D.TypeA, random)
 	if err == nil {
 		return
 	}
@@ -70,13 +72,13 @@ func (r *Resolver) ResolveIP(host string) (ip netip.Addr, err error) {
 }
 
 // ResolveIPv4 request with TypeA
-func (r *Resolver) ResolveIPv4(host string) (ip netip.Addr, err error) {
+func (r *Resolver) ResolveIPv4(host string, random bool) (ip netip.Addr, err error) {
-	return r.resolveIP(host, D.TypeA)
+	return r.resolveIP(host, D.TypeA, random)
 }
 
 // ResolveIPv6 request with TypeAAAA
-func (r *Resolver) ResolveIPv6(host string) (ip netip.Addr, err error) {
+func (r *Resolver) ResolveIPv6(host string, random bool) (ip netip.Addr, err error) {
-	return r.resolveIP(host, D.TypeAAAA)
+	return r.resolveIP(host, D.TypeAAAA, random)
 }
 
 func (r *Resolver) shouldIPFallback(ip netip.Addr) bool {
@@ -255,9 +257,10 @@ func (r *Resolver) ipExchange(ctx context.Context, m *D.Msg) (msg *D.Msg, err er
 	return
 }
 
-func (r *Resolver) resolveIP(host string, dnsType uint16) (ip netip.Addr, err error) {
+func (r *Resolver) resolveIP(host string, dnsType uint16, random bool) (ip netip.Addr, err error) {
 	ip, err = netip.ParseAddr(host)
 	if err == nil {
+		ip = ip.Unmap()
 		isIPv4 := ip.Is4()
 		if dnsType == D.TypeAAAA && !isIPv4 {
 			return ip, nil
@@ -282,7 +285,12 @@ func (r *Resolver) resolveIP(host string, dnsType uint16) (ip netip.Addr, err er
 		return netip.Addr{}, resolver.ErrIPNotFound
 	}
 
-	ip = ips[rand.Intn(ipLength)]
+	index := 0
+	if random {
+		index = rand.Intn(ipLength)
+	}
+
+	ip = ips[index]
 	return
 }
 

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/gorilla/websocket v1.5.0
 	github.com/insomniacslk/dhcp v0.0.0-20220504074936-1ca156eafb9f
-	github.com/miekg/dns v1.1.49
+	github.com/miekg/dns v1.1.50
 	github.com/oschwald/geoip2-golang v1.7.0
 	github.com/sirupsen/logrus v1.8.1
 	github.com/stretchr/testify v1.7.2
@@ -17,18 +17,18 @@ require (
 	go.etcd.io/bbolt v1.3.6
 	go.uber.org/atomic v1.9.0
 	go.uber.org/automaxprocs v1.5.1
-	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d
 	golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d
-	golang.org/x/net v0.0.0-20220617184016-355a448f1bc9
+	golang.org/x/net v0.0.0-20220630215102-69896b714898
 	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
-	golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c
+	golang.org/x/sys v0.0.0-20220627191245-f75cf1eec38b
 	golang.org/x/text v0.3.8-0.20220124021120-d1c84af989ab
 	golang.org/x/time v0.0.0-20220609170525-579cf78fd858
 	golang.zx2c4.com/wireguard v0.0.0-20220601130007-6a08d81f6bc4
 	golang.zx2c4.com/wireguard/windows v0.5.4-0.20220328111914-004c22c5647e
 	google.golang.org/protobuf v1.28.0
 	gopkg.in/yaml.v3 v3.0.1
-	gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069
+	gvisor.dev/gvisor v0.0.0-20220630235058-ce952880a3d3
 )
 
 require (

go.sum

@@ -45,8 +45,8 @@ github.com/mdlayher/netlink v1.1.0/go.mod h1:H4WCitaheIsdF9yOYu8CFmCgQthAPIWZmcK
 github.com/mdlayher/netlink v1.1.1/go.mod h1:WTYpFb/WTvlRJAyKhZL5/uy69TDDpHHu2VZmb2XgV7o=
 github.com/mdlayher/raw v0.0.0-20190606142536-fef19f00fc18/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
-github.com/miekg/dns v1.1.49 h1:qe0mQU3Z/XpFeE+AEBo2rqaS1IPBJ3anmqZ4XiZJVG8=
+github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
-github.com/miekg/dns v1.1.49/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
+github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
 github.com/oschwald/geoip2-golang v1.7.0 h1:JW1r5AKi+vv2ujSxjKthySK3jo8w8oKWPyXsw+Qs/S8=
 github.com/oschwald/geoip2-golang v1.7.0/go.mod h1:mdI/C7iK7NVMcIDDtf4bCKMJ7r0o7UwGeCo9eiitCMQ=
 github.com/oschwald/maxminddb-golang v1.9.0 h1:tIk4nv6VT9OiPyrnDAfJS1s1xKDQMZOsGojab6EjC1Y=
@@ -78,8 +78,8 @@ go.uber.org/automaxprocs v1.5.1/go.mod h1:BF4eumQw0P9GtnuxxovUd06vwm1o18oMzFtK66
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d h1:sK3txAijHtOK88l68nt020reeT1ZdKLIYetKl95FzVY=
-golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d h1:vtUKgx8dahOomfFzLREU8nSv25YHnTgLBn4rDnWZdU0=
 golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
@@ -97,8 +97,8 @@ golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220617184016-355a448f1bc9 h1:Yqz/iviulwKwAREEeUd3nbBFn0XuyJqkoft2IlrvOhc=
+golang.org/x/net v0.0.0-20220630215102-69896b714898 h1:K7wO6V1IrczY9QOQ2WkVpw4JQSwCd52UsxVEirZUfiw=
-golang.org/x/net v0.0.0-20220617184016-355a448f1bc9/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.0.0-20220630215102-69896b714898/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
@@ -123,8 +123,8 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c h1:aFV+BgZ4svzjfabn8ERpuB4JI4N6/rdy1iusx77G3oU=
+golang.org/x/sys v0.0.0-20220627191245-f75cf1eec38b h1:2n253B2r0pYSmEV+UNCQoPfU/FiaizQEK5Gu4Bq4JE8=
-golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220627191245-f75cf1eec38b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -158,5 +158,5 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069 h1:Ly12hwbYd06NuYM2/nssGPgQ9ZVw7xaNs2lc087VW1w=
+gvisor.dev/gvisor v0.0.0-20220630235058-ce952880a3d3 h1:rnajnEGeshXCEr3k/7pWAM6zXh1Ws4jkZgWuWXjCJSw=
-gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
+gvisor.dev/gvisor v0.0.0-20220630235058-ce952880a3d3/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=

hub/executor/executor.go

@@ -82,7 +82,7 @@ func ApplyConfig(cfg *config.Config, force bool) {
 	updateHosts(cfg.Hosts)
 	updateMitm(cfg.Mitm)
 	updateProfile(cfg)
-	updateDNS(cfg.DNS, cfg.General.Tun)
+	updateDNS(cfg.DNS, &cfg.General.Tun)
 	updateGeneral(cfg.General, force)
 	updateIPTables(cfg)
 	updateExperimental(cfg)
@@ -121,7 +121,7 @@ func GetGeneral() *config.General {
 
 func updateExperimental(_ *config.Config) {}
 
-func updateDNS(c *config.DNS, t config.Tun) {
+func updateDNS(c *config.DNS, t *config.Tun) {
 	cfg := dns.Config{
 		Main:         c.NameServer,
 		Fallback:     c.Fallback,
@@ -179,7 +179,7 @@ func updateDNS(c *config.DNS, t config.Tun) {
 	}
 
 	if cfg.Pool != nil {
-		P.SetTunAddressPrefix(cfg.Pool.IPNet())
+		t.TunAddressPrefix = cfg.Pool.IPNet()
 	}
 }
 

listener/listener.go

@@ -31,11 +31,9 @@ import (
 )
 
 var (
-	allowLan             = false
+	allowLan    = false
-	bindAddress          = "*"
+	bindAddress = "*"
-	lastTunConf          *config.Tun
+	lastTunConf *config.Tun
-	lastTunAddressPrefix *netip.Prefix
-	tunAddressPrefix     *netip.Prefix
 
 	socksListener     *socks.Listener
 	socksUDPListener  *socks.UDPListener
@@ -109,10 +107,6 @@ func SetBindAddress(host string) {
 	bindAddress = host
 }
 
-func SetTunAddressPrefix(tunAddress *netip.Prefix) {
-	tunAddressPrefix = tunAddress
-}
-
 func ReCreateHTTP(port int, tcpIn chan<- C.ConnContext) {
 	httpMux.Lock()
 	defer httpMux.Unlock()
@@ -363,14 +357,10 @@ func ReCreateTun(tunConf *config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *
 		}
 	}()
 
-	if tunAddressPrefix == nil {
-		tunAddressPrefix = lastTunAddressPrefix
-	}
-
 	tunConf.DNSHijack = C.RemoveDuplicateDNSUrl(tunConf.DNSHijack)
 
 	if tunStackListener != nil {
-		if !hasTunConfigChange(tunConf, tunAddressPrefix) {
+		if !hasTunConfigChange(tunConf) {
 			return
 		}
 
@@ -379,7 +369,6 @@ func ReCreateTun(tunConf *config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *
 	}
 
 	lastTunConf = tunConf
-	lastTunAddressPrefix = tunAddressPrefix
 
 	if !tunConf.Enable {
 		return
@@ -391,7 +380,7 @@ func ReCreateTun(tunConf *config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *
 		udpIn:   udpIn,
 	}
 
-	tunStackListener, err = tun.New(tunConf, tunAddressPrefix, tcpIn, udpIn, callback)
+	tunStackListener, err = tun.New(tunConf, tcpIn, udpIn, callback)
 	if err != nil {
 		return
 	}
@@ -535,7 +524,7 @@ func genAddr(host string, port int, allowLan bool) string {
 	return fmt.Sprintf("127.0.0.1:%d", port)
 }
 
-func hasTunConfigChange(tunConf *config.Tun, tunAddressPrefix *netip.Prefix) bool {
+func hasTunConfigChange(tunConf *config.Tun) bool {
 	if lastTunConf == nil {
 		return true
 	}
@@ -558,11 +547,11 @@ func hasTunConfigChange(tunConf *config.Tun, tunAddressPrefix *netip.Prefix) boo
 		return true
 	}
 
-	if (tunAddressPrefix != nil && lastTunAddressPrefix == nil) || (tunAddressPrefix == nil && lastTunAddressPrefix != nil) {
+	if (lastTunConf.TunAddressPrefix != nil && tunConf.TunAddressPrefix == nil) || (lastTunConf.TunAddressPrefix == nil && tunConf.TunAddressPrefix != nil) {
 		return true
 	}
 
-	if tunAddressPrefix != nil && lastTunAddressPrefix != nil && *tunAddressPrefix != *lastTunAddressPrefix {
+	if lastTunConf.TunAddressPrefix != nil && tunConf.TunAddressPrefix != nil && *lastTunConf.TunAddressPrefix != *tunConf.TunAddressPrefix {
 		return true
 	}
 

listener/tproxy/udp.go

@@ -72,6 +72,11 @@ func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error)
 			if err != nil {
 				continue
 			}
+
+			if rAddr.Addr().Is4() {
+				// try to unmap 4in6 address
+				lAddr = netip.AddrPortFrom(lAddr.Addr().Unmap(), lAddr.Port())
+			}
 			handlePacketConn(in, buf[:n], lAddr, rAddr)
 		}
 	}()

listener/tun/device/fdbased/fd_unix.go

@@ -41,6 +41,10 @@ func (f *FD) Name() string {
 	return strconv.Itoa(f.fd)
 }
 
+func (f *FD) MTU() uint32 {
+	return f.mtu
+}
+
 func (f *FD) Close() error {
 	err := unix.Close(f.fd)
 	if f.file != nil {

listener/tun/device/fdbased/fd_windows.go

@@ -4,8 +4,48 @@ import (
 	"errors"
 
 	"github.com/Dreamacro/clash/listener/tun/device"
+
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
 )
 
-func Open(name string, mtu uint32) (device.Device, error) {
+type FD struct {
+	stack.LinkEndpoint
+}
+
+func Open(_ string, _ uint32) (device.Device, error) {
 	return nil, errors.New("not supported")
 }
+
+func (f *FD) Name() string {
+	return ""
+}
+
+func (f *FD) Type() string {
+	return Driver
+}
+
+func (f *FD) Read(_ []byte) (int, error) {
+	return 0, nil
+}
+
+func (f *FD) Write(_ []byte) (int, error) {
+	return 0, nil
+}
+
+func (f *FD) Close() error {
+	return nil
+}
+
+func (f *FD) UseEndpoint() error {
+	return nil
+}
+
+func (f *FD) UseIOBased() error {
+	return nil
+}
+
+func (f *FD) MTU() uint32 {
+	return 0
+}
+
+var _ device.Device = (*FD)(nil)

listener/tun/device/tun/tun_wireguard.go

@@ -59,10 +59,13 @@ func Open(name string, mtu uint32) (_ device.Device, err error) {
 	if err != nil {
 		return nil, fmt.Errorf("get mtu: %w", err)
 	}
-	t.mtu = uint32(tunMTU)
+
+	if t.mtu == 0 {
+		t.mtu = uint32(tunMTU)
+	}
 
 	if t.offset > 0 {
-		t.cache = make([]byte, 65535)
+		t.cache = make([]byte, int(t.mtu)+t.offset)
 	}
 
 	return t, nil
@@ -108,6 +111,10 @@ func (t *TUN) Name() string {
 	return name
 }
 
+func (t *TUN) MTU() uint32 {
+	return t.mtu
+}
+
 func (t *TUN) UseEndpoint() error {
 	ep, err := iobased.New(t, t.mtu, t.offset)
 	if err != nil {

listener/tun/ipstack/system/mars/nat/nat.go

@@ -5,8 +5,10 @@ import (
 	"net"
 	"net/netip"
 
+	dev "github.com/Dreamacro/clash/listener/tun/device"
+	"github.com/Dreamacro/clash/listener/tun/device/fdbased"
+	"github.com/Dreamacro/clash/listener/tun/device/tun"
 	"github.com/Dreamacro/clash/listener/tun/ipstack/system/mars/tcpip"
-	"github.com/Dreamacro/clash/log"
 )
 
 func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *UDP, error) {
@@ -19,10 +21,27 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 		return nil, nil, err
 	}
 
+	var (
+		t   dev.Device
+		mtu uint32
+		ok  bool
+	)
+	if t, ok = device.(*tun.TUN); ok {
+		mtu = t.MTU()
+	} else if t, ok = device.(*fdbased.FD); ok {
+		mtu = t.MTU()
+	}
+
+	bufferSize := int(mtu)
+
+	if bufferSize == 0 {
+		bufferSize = 64 * 1024
+	}
+
 	tab := newTable()
 	udp := &UDP{
 		device: device,
-		buf:    [0xffff]byte{},
+		buf:    make([]byte, bufferSize),
 	}
 	tcp := &TCP{
 		listener: listener,
@@ -38,7 +57,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 			_ = udp.Close()
 		}()
 
-		buf := make([]byte, 0xffff)
+		buf := make([]byte, bufferSize)
 
 		for {
 			n, err := device.Read(buf)
@@ -133,11 +152,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 							continue
 						}
 
-						port, err = tab.newConn(tup)
+						port = tab.newConn(tup)
-						if err != nil {
-							log.Warnln("[STACK] drop tcp packet by system stack: %v", err)
-							continue
-						}
 					}
 
 					ip.SetSourceIP(portal)
@@ -156,7 +171,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 					continue
 				}
 
-				go udp.handleUDPPacket(ip, u)
+				udp.handleUDPPacket(ip, u)
 			case tcpip.ICMP:
 				i := tcpip.ICMPPacket(ip.Payload())
 

listener/tun/ipstack/system/mars/nat/table.go

@@ -1,13 +1,9 @@
 package nat
 
 import (
-	"fmt"
 	"net/netip"
-	"sync"
 
 	"github.com/Dreamacro/clash/common/generics/list"
-
-	"golang.org/x/exp/maps"
 )
 
 const (
@@ -31,8 +27,6 @@ type table struct {
 	tuples    map[tuple]*list.Element[*binding]
 	ports     [portLength]*list.Element[*binding]
 	available *list.List[*binding]
-	mux       sync.Mutex
-	count     uint16
 }
 
 func (t *table) tupleOf(port uint16) tuple {
@@ -49,64 +43,27 @@ func (t *table) tupleOf(port uint16) tuple {
 }
 
 func (t *table) portOf(tuple tuple) uint16 {
-	t.mux.Lock()
 	elm := t.tuples[tuple]
 	if elm == nil {
-		t.mux.Unlock()
 		return 0
 	}
-	t.mux.Unlock()
 
 	t.available.MoveToFront(elm)
 
 	return portBegin + elm.Value.offset
 }
 
-func (t *table) newConn(tuple tuple) (uint16, error) {
+func (t *table) newConn(tuple tuple) uint16 {
-	t.mux.Lock()
+	elm := t.available.Back()
-	elm, err := t.availableConn()
+	b := elm.Value
-	if err != nil {
-		t.mux.Unlock()
-		return 0, err
-	}
 
-	elm.Value.tuple = tuple
+	delete(t.tuples, b.tuple)
 	t.tuples[tuple] = elm
-	t.mux.Unlock()
+	b.tuple = tuple
 
-	return portBegin + elm.Value.offset, nil
+	t.available.MoveToFront(elm)
-}
 
-func (t *table) availableConn() (*list.Element[*binding], error) {
+	return portBegin + b.offset
-	var elm *list.Element[*binding]
-
-	for i := 0; i < portLength; i++ {
-		elm = t.available.Back()
-		t.available.MoveToFront(elm)
-
-		offset := elm.Value.offset
-		tup := t.ports[offset].Value.tuple
-		if t.tuples[tup] != nil && tup.SourceAddr.IsValid() {
-			continue
-		}
-
-		if t.count == portLength { // resize
-			tuples := make(map[tuple]*list.Element[*binding], portLength)
-			maps.Copy(tuples, t.tuples)
-			t.tuples = tuples
-			t.count = 1
-		}
-		return elm, nil
-	}
-
-	return nil, fmt.Errorf("too many open files, limits [%d, %d]", portLength, len(t.tuples))
-}
-
-func (t *table) closeConn(tuple tuple) {
-	t.mux.Lock()
-	delete(t.tuples, tuple)
-	t.count++
-	t.mux.Unlock()
 }
 
 func newTable() *table {
@@ -114,7 +71,6 @@ func newTable() *table {
 		tuples:    make(map[tuple]*list.Element[*binding], portLength),
 		ports:     [portLength]*list.Element[*binding]{},
 		available: list.New[*binding](),
-		count:     1,
 	}
 
 	for idx := range result.ports {

listener/tun/ipstack/system/mars/nat/tcp.go

@@ -16,8 +16,6 @@ type conn struct {
 	net.Conn
 
 	tuple tuple
-
-	close func()
 }
 
 func (t *TCP) Accept() (net.Conn, error) {
@@ -41,9 +39,6 @@ func (t *TCP) Accept() (net.Conn, error) {
 	return &conn{
 		Conn:  c,
 		tuple: tup,
-		close: func() {
-			t.table.closeConn(tup)
-		},
 	}, nil
 }
 
@@ -60,7 +55,6 @@ func (t *TCP) SetDeadline(time time.Time) error {
 }
 
 func (c *conn) Close() error {
-	c.close()
 	return c.Conn.Close()
 }
 

listener/tun/ipstack/system/mars/nat/udp.go

@@ -24,7 +24,7 @@ type UDP struct {
 	queueLock sync.Mutex
 	queue     []*call
 	bufLock   sync.Mutex
-	buf       [0xffff]byte
+	buf       []byte
 }
 
 func (u *UDP) ReadFrom(buf []byte) (int, netip.AddrPort, netip.AddrPort, error) {

listener/tun/tun_adapter.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/Dreamacro/clash/adapter/inbound"
 	"github.com/Dreamacro/clash/common/cmd"
-	"github.com/Dreamacro/clash/component/process"
 	"github.com/Dreamacro/clash/config"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/listener/tun/device"
@@ -24,7 +23,7 @@ import (
 )
 
 // New TunAdapter
-func New(tunConf *config.Tun, tunAddressPrefix *netip.Prefix, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter, tunChangeCallback C.TUNChangeCallback) (ipstack.Stack, error) {
+func New(tunConf *config.Tun, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.PacketAdapter, tunChangeCallback C.TUNChangeCallback) (ipstack.Stack, error) {
 	var (
 		tunAddress = netip.Prefix{}
 		devName    = tunConf.Device
@@ -48,16 +47,14 @@ func New(tunConf *config.Tun, tunAddressPrefix *netip.Prefix, tcpIn chan<- C.Con
 		devName = generateDeviceName()
 	}
 
-	if tunAddressPrefix != nil {
+	if tunConf.TunAddressPrefix != nil {
-		tunAddress = *tunAddressPrefix
+		tunAddress = *tunConf.TunAddressPrefix
 	}
 
 	if !tunAddress.IsValid() || !tunAddress.Addr().Is4() {
 		tunAddress = netip.MustParsePrefix("198.18.0.1/16")
 	}
 
-	process.AppendLocalIPs(tunAddress.Masked().Addr().Next())
-
 	// open tun device
 	tunDevice, err = parseDevice(devName, uint32(mtu))
 	if err != nil {

tunnel/connection.go

@@ -16,7 +16,7 @@ func handleUDPToRemote(packet C.UDPPacket, pc C.PacketConn, metadata *C.Metadata
 
 	// local resolve UDP dns
 	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return err
 		}

tunnel/tunnel.go

@@ -190,19 +190,6 @@ func preHandleMetadata(metadata *C.Metadata) error {
 		}
 	}
 
-	// pre resolve process name
-	srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
-	if err == nil && P.ShouldFindProcess(metadata) {
-		path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, int(srcPort))
-		if err != nil {
-			log.Debugln("[Process] find process %s: %v", metadata.String(), err)
-		} else {
-			log.Debugln("[Process] %s from process %s", metadata.String(), path)
-			metadata.Process = filepath.Base(path)
-			metadata.ProcessPath = path
-		}
-	}
-
 	return nil
 }
 
@@ -385,7 +372,10 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 	configMux.RLock()
 	defer configMux.RUnlock()
 
-	var resolved bool
+	var (
+		resolved     bool
+		processFound bool
+	)
 
 	if node := resolver.DefaultHosts.Search(metadata.Host); node != nil {
 		metadata.DstIP = node.Data
@@ -404,6 +394,22 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 			resolved = true
 		}
 
+		if !processFound && rule.ShouldFindProcess() {
+			processFound = true
+
+			srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
+			if err == nil {
+				path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, int(srcPort))
+				if err != nil {
+					log.Debugln("[Process] find process %s: %v", metadata.String(), err)
+				} else {
+					log.Debugln("[Process] %s from process %s", metadata.String(), path)
+					metadata.Process = filepath.Base(path)
+					metadata.ProcessPath = path
+				}
+			}
+		}
+
 		if rule.Match(metadata) {
 			adapter, ok := proxies[rule.Adapter()]
 			if !ok {