Halo Hosting Problems

Hey, I'm having a problem while hosting a server. I'm on a D-Link Di-604 Router and people cant see my server through gamespy, or the master list (this is demo btw but shouldn't matter). They can however connect through Direct Ip. I've hosted many times including today without the router and it works fine, can do 16 without lag. The day I downloaded the demo it worked fine, but the next day it stopped working. I read on some other sites of people having the same problem but there wasn't a working answer. I've tried everything I can think of, opening all the halo ports, gamespy, direct play, and adding -ip x.x.x.x -cport and all that stuff to the end of the halo shortcut properties, also tried it through command prompt. I noticed though when I did the -ip command that ingame the ip show backward, ie. when i do 123.456.789.012 it shows as 012.789.456.123. I tried this both ways and didn't work. If anyone has any ideas or knows the problem please help.

 

anyone