The site is read-only. Please transition to use Robotics Stack Exchange
| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
 | 1 | initial version |
@gvdhoorn Thanks for your reference links.
This one solves my problem https://stackoverflow.com/a/30982079/6920365
You can use multicast on loopback but you have to add a new route because your OS using default external interface by default for multicast. Also multicast can be disabled by default on loopback. On linux you can change this with this command:
route add -net 224.0.0.0 netmask 240.0.0.0 dev lo
ifconfig lo multicast
To check loopback, run this command: (make you are disconnected from all network connectivity)
Terminal 1: ros2 run demo_nodes_cpp talker
Terminal 2: ros2 run demo_nodes_cpp listener
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.