diff --git a/iface/bind/bind.go b/iface/bind/bind.go
index 9faf9c81b..4f02bf076 100644
--- a/iface/bind/bind.go
+++ b/iface/bind/bind.go
@@ -78,9 +78,19 @@ func NewICEBind(transportNet transport.Net) *ICEBind {
 	}
 }
 
+type StdNetEndpoint struct {
+	// AddrPort is the endpoint destination.
+	netip.AddrPort
+	// src is the current sticky source address and interface index, if supported.
+	src struct {
+		netip.Addr
+		ifidx int32
+	}
+}
+
 var (
 	_ wgConn.Bind     = (*ICEBind)(nil)
-	_ wgConn.Endpoint = &wgConn.StdNetEndpoint{}
+	_ wgConn.Endpoint = &StdNetEndpoint{}
 )
 
 func (*ICEBind) ParseEndpoint(s string) (wgConn.Endpoint, error) {
@@ -88,6 +98,36 @@ func (*ICEBind) ParseEndpoint(s string) (wgConn.Endpoint, error) {
 	return asEndpoint(e), err
 }
 
+func (e *StdNetEndpoint) ClearSrc() {
+	e.src.ifidx = 0
+	e.src.Addr = netip.Addr{}
+}
+
+func (e *StdNetEndpoint) DstIP() netip.Addr {
+	return e.AddrPort.Addr()
+}
+
+func (e *StdNetEndpoint) SrcIP() netip.Addr {
+	return e.src.Addr
+}
+
+func (e *StdNetEndpoint) SrcIfidx() int32 {
+	return e.src.ifidx
+}
+
+func (e *StdNetEndpoint) DstToBytes() []byte {
+	b, _ := e.AddrPort.MarshalBinary()
+	return b
+}
+
+func (e *StdNetEndpoint) DstToString() string {
+	return e.AddrPort.String()
+}
+
+func (e *StdNetEndpoint) SrcToString() string {
+	return e.src.Addr.String()
+}
+
 func listenNet(network string, port int) (*net.UDPConn, int, error) {
 	conn, err := listenConfig().ListenPacket(context.Background(), network, ":"+strconv.Itoa(port))
 	if err != nil {
@@ -275,12 +315,12 @@ func (s *ICEBind) send4(conn *ipv4.PacketConn, ep wgConn.Endpoint, buffs [][]byt
 	as4 := ep.DstIP().As4()
 	copy(ua.IP, as4[:])
 	ua.IP = ua.IP[:4]
-	ua.Port = int(ep.(*wgConn.StdNetEndpoint).Port())
+	ua.Port = int(ep.(*StdNetEndpoint).Port())
 	msgs := s.ipv4MsgsPool.Get().(*[]ipv4.Message)
 	for i, buff := range buffs {
 		(*msgs)[i].Buffers[0] = buff
 		(*msgs)[i].Addr = ua
-		setSrcControl(&(*msgs)[i].OOB, ep.(*wgConn.StdNetEndpoint))
+		setSrcControl(&(*msgs)[i].OOB, ep.(*StdNetEndpoint))
 	}
 	var (
 		n     int
@@ -304,12 +344,12 @@ func (s *ICEBind) send6(conn *ipv6.PacketConn, ep wgConn.Endpoint, buffs [][]byt
 	as16 := ep.DstIP().As16()
 	copy(ua.IP, as16[:])
 	ua.IP = ua.IP[:16]
-	ua.Port = int(ep.(*wgConn.StdNetEndpoint).Port())
+	ua.Port = int(ep.(*StdNetEndpoint).Port())
 	msgs := s.ipv6MsgsPool.Get().(*[]ipv6.Message)
 	for i, buff := range buffs {
 		(*msgs)[i].Buffers[0] = buff
 		(*msgs)[i].Addr = ua
-		setSrcControl(&(*msgs)[i].OOB, ep.(*wgConn.StdNetEndpoint))
+		setSrcControl(&(*msgs)[i].OOB, ep.(*StdNetEndpoint))
 	}
 	var (
 		n     int
@@ -354,17 +394,17 @@ func (s *ICEBind) filterOutStunMessages(buffers [][]byte, n int, addr net.Addr)
 // but Endpoints are immutable, so we can re-use them.
 var endpointPool = sync.Pool{
 	New: func() any {
-		return make(map[netip.AddrPort]*wgConn.StdNetEndpoint)
+		return make(map[netip.AddrPort]*StdNetEndpoint)
 	},
 }
 
 // asEndpoint returns an Endpoint containing ap.
-func asEndpoint(ap netip.AddrPort) *wgConn.StdNetEndpoint {
-	m := endpointPool.Get().(map[netip.AddrPort]*wgConn.StdNetEndpoint)
+func asEndpoint(ap netip.AddrPort) *StdNetEndpoint {
+	m := endpointPool.Get().(map[netip.AddrPort]*StdNetEndpoint)
 	defer endpointPool.Put(m)
 	e, ok := m[ap]
 	if !ok {
-		e = &wgConn.StdNetEndpoint{AddrPort: ap}
+		e = &StdNetEndpoint{AddrPort: ap}
 		m[ap] = e
 	}
 	return e