The server app sends a call out to http://www.whatismyip.com/automation/n09230945.asp to find the external IP.

It should be pretty simple to add a hosts file entry for that server redirecting to localhost (or another box you own) and then have a web server on that machine serve 3 responses in round robin which contain your different external IPs.

Well, I'll come back and try tomorrow or the next day. No point in running a server that dies every 10 minutes and requires manual input each new startup.

It's a fun game, and I'll be patient since it's in testing :)

If you could add a server config file with these settings, that'd be great:

servername
maxplayers
ip

I run a server with enough room for several servers, but the server always finds the same IP to run on.