Update CarmaMessengerRegistrationReceiver.java

co-simulation/fed/mosaic-carma-messenger/src/main/java/org/eclipse/mosaic/fed/carmamessenger/ambassador/CarmaMessengerRegistrationReceiver.java

@@ -35,7 +35,7 @@ public CarmaMessengerRegistrationReceiver(Class<CarmaMessengerRegistrationMessag
     }
 
     private DatagramSocket listenSocket = null;
-    private static final int msgerListenPort = 1715;
+    private static final int msgerListenPort = 3100;
     private boolean running = true;
     private static final int UDP_MTU = 1535;
     private final Logger log = LoggerFactory.getLogger(this.getClass());