I'm fairly accustomed to networking, however i cannot solve the issue i've been having. Upnp has been typically all i needed to open the NAT on my 360, but as of late it switches back to moderate on a daily basis.
I do have a solution: turning upnp off, resetting my modem, and turning upnp back on will open it up...but why won't it stay open?
Hardware: Actiontec R1000H.... http://www.actiontec.com/212.html
ISP: Bell FibreOp
Note: putting my Xbox in the DMZ under a static IP only yields a moderate NAT...does this make it an ISP issue?
I've also tried manually forwarding the ports, with upnp off, to no avail.
Help is appreciated!