[subject_starcraft]THIS NEWSPOST ABOUT PLAYING 2on2 with the same IP was supposed to be an article. I've been working with a lot of different solutions to play via Battle.net this way. We were working with a big guide for Linux, one for routers and one for Windows servers as ISP:s. However, after a lot of research and spended money (for a router and a switch) I found a guide for it right in front of me. At Blizzard's homepage.
Since a lot of people have asked me about this, I consider the fact that you are able to play 2on2 with the same IP as rather unknown. This is the reason of the newspost. So, take a look at the link below to Blizzard homepage and make it available yourself. Good luck, and have fun!
Links
Blizzard.com - Play 2on2 with the same IP