Switching from ROS2’s multicast default to unicast can be a bit tricky, especially if you’re testing.
Virtualbox guest master setup Networking Select Internal networking
according to here, internal networking fully supports broadcast.
Virtualbox guest master setup create a virtual machine
Networking: Select bridged networking install ubuntu 22.
I am a Robotics Researcher, director of the IDEAlab, and Assistant Professor in the Ira A.