I have a setup like the one illustrated below. The router is a standard commercial home router and wireless AP, and computer B is a Raspberry Pi running Ubuntu, and it has one ethernet interface and one Wifi interface. B gets one IP from the router's DHCP server (on /24 subnet) over Wifi, and serves IPs from its own DHCP server (also /24 subnet) on the ethernet interface.
10.0.1.2 10.0.1.1
10.0.0.2 10.0.0.1 10.0.0.3
----- ----- ---------- -----
| A | ---ETH--- | B | ---WIFI--- | ROUTER | ---WIFI--- | C |
----- ----- ---------- -----
This setup is for running ROS2/DDS (A and B are internal in the robot and C is the control computer), but from what I understand I can't get messages from A to C since they're on different subnets (DDS uses UDP multicast).
- Is it possible to use B to bridge the Wifi subnet and the ethernet subnet? If not,
- How can I set up the routing table on B to correctly forward UDP multicast messages between the two networks?
