Okay so this problem only happens with the bt homehub 3. When i was with virgin media this never happens, and it is a majour problem. So basicly when i host a game server (e.g. css, gmod, minecraft) i cannot connect to the server in game using my external ip and the port (e.g. 22.214.171.124:27015) I used to be able to do this but not anymore. now i have to type localhost but sadly that only works in minecraft not any steam games.