Slightly related to this, you may want to make sure that multicast is enabled on your NIC. I've noticed that on some Linux machines even the local communication doesn't work wo/ the multicast being explicitly activated on the loopback adapter. See here: https://github.com/eProsima/Fast-RTPS/issues/63 --- [Visit Topic](https://discourse.ros.org/t/no-communication-if-no-gateway-is-set/2915/7) 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: