I noticed that GameTracker sends \xFF\xFF\xFF\xFF\x02\x00\x00\x00\x00\x00\x00\x00\x00 to a server you're trying to add.

Why does this work for you guys, because the servers actually need 8 bytes that I can't figure out yet (I have them for servers I see in the server browser, but I don't see any relation with the game's protocol, IP or port in it).

Can you tell me your secret, because your eight 0x00-bytes make no sense to me (and CoD7 servers don't respond to it for me).