Racing and master server

I can not get the racing demo to work over the net properly for some reason, my computer is on my routers DMZ list to allow me to host servers, when i host a starter.fps game i get no probs, my friends can see my server and connect, when i host a starter.racing game, my friends do not see my server in the master list, but can however connect using connect("IP"); they can also see servers over a lan, just nothing from the master, a quick fix would be to make a direct connect GUI that asks the player to enter an IP address, but then that requires knowing the IP of the server and removes the ability of a player being able to jump on a random server.

has anyone else had this problem? i have had it with my build, and a clean build of starter.racing... =/