I have been attempting to use MavProxy as mavlink proxy server, because this way I can use my fix IP home server. So I have Ubuntu running on my server machine.
The whole thing is also behind firewall, which has port forwarding to server - which means all traffic of port 14550 goes to local network address 192.168.1.2
Ground station is Apmplanner2 and connected to server via VPN and has local address (192.168.1.33). I can access ssh and so on.
As I run mavproxy.py --master=udp:0.0.0.0:14550 --out=udp:192.168.1.33:14551 it connects apmplanner2, but I can only receive data, but cannot execute commands.
The same when I use udpbcast as output.