title: Posting messages to different interfaces on ROS2
body: <p>I have 2 Ethernet ports and 10 topics. Is it possible to publish topics 1 3 5 7 9 on 1 port, and the remaining topics 2 2 6 6 10 to publish on port 2 so that a computer connected to the second port can only see and read data from topics 2 4 6 8 10. A computer connected to port 1 could see and read data from topics 1 3 5 7 9. I use DDS from OpenSplice.</p>