Upnp problem

[berilliy11]

i cant say if its worked or not, i can see my friends lobby in mgs peace walker, but when we trying to start the game, its says that connection is lost and we cant start the game, also he keep seeing yellow "Data from unknown port [PPSSPP]" message. And we tried to change who is hosting as official wiki says, but nothing changes. mk unchained for example doesnt even show my lobby to friend.