Metal gear solid peace walker

[BambamCZ]

Hello guys, I'm having issues with trying to get Peace Walker coop going. I have everything set up to play through local ad-hoc network. Two laptops, we conncet fine, we both show up in the server log and even tried Monster Hunter FU which worked flawlessly. But in Peace Walker neither of us can connect. We can set up a game, start hosting and wait for the other but searching for host goes on forever and doesn't connect. When we switch the order and my brother starts searching for host before I host a game the lobby starts with 2\2 players but the other player's name is blank and he's still stuck on "searching for host". The log just says he joined specific channel but doesn't request information as it does for Monster Hunter.

tl;dr:We can set up the server just fine and Monster Hunter games work, but in Peace Walker neither of can join hosted game, even if all is set up according to guides.