Thanks for your answers. @dirk-thomas Sry didn't wanted to sound rude. As a user it is at the moment quite hard to tell if some behaviour is intented, a bug, or if I'm simply using it the wrong way Regarding the gateway behaviour: I was just really irriated because this kind of setup might occur sometimes in robotic systems. @karsten Some of these phenomenas I already noticed myself. The loopback interface communication without having any other interfaces activated never worked for me regardless of using FastRTPS or OpenSplice. --- [Visit Topic](https://discourse.ros.org/t/no-communication-if-no-gateway-is-set/2915/8) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: