Split UDPMux and UniversalUDPMux

client/internal/engine.go

@@ -89,7 +89,8 @@ type Engine struct {
 
 	wgInterface *iface.WGIface
 
-	iceMux ice.UniversalUDPMux
+	iceMux     ice.UniversalUDPMux
+	iceHostMux ice.UDPMux
 
 	// networkSerial is the latest CurrentSerial (state ID) of the network sent by the Management service
 	networkSerial uint64
@@ -249,6 +250,12 @@ func (e *Engine) Start() error {
 	}
 	e.iceMux = iceMux
 
+	iceHostMux, err := bind.GetICEHostMux()
+	if err != nil {
+		return err
+	}
+	e.iceHostMux = iceHostMux
+
 	log.Infof("NetBird Engine started listening on WireGuard port %d", *port)
 
 	e.receiveSignalEvents()
@@ -743,7 +750,7 @@ func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, er
 		StunTurn:           stunTurn,
 		InterfaceBlackList: e.config.IFaceBlackList,
 		Timeout:            timeout,
-		UDPMux:             e.iceMux,
+		UDPMux:             e.iceHostMux,
 		UDPMuxSrflx:        e.iceMux,
 		ProxyConfig:        proxyConfig,
 		LocalWgPort:        e.config.WgPort,