Multiple IP adresses (NAT)

My server is behind NAT.

Its IP for inbound connections is xxx.xxx.xxx.11
Its IP for outbound connections is xxx.xxx.xxx.6

As long as I connect directly via


connect xxx.xxx.xxx.11

everything is OK (meaning server is ON and working)

But server says that his actual public IP is xxx.xxx.xxx.6 and tries to index himself as xxx.xxx.xxx.6 in Steam server list so that my server is invisible, though reachable via xxx.xxx.xxx.11

Is there any way telling my actual IP to steam server list?

Using


-ip xxx.xxx.xxx.11

OR


+ip xxx.xxx.xxx.11

gives us an error:


Couldn't allocate any server IP port