Ok, first off, im not some dumb 12 year old whos going to ask a bunch of stupid questions. I am an IT Tech so for the most part I know what I'm doing.
I keep getting the mtu error, but I've checked my mtu's between the xbox and the internet and they all read back 1400+, well above the minimal limit to get on xbl.
All the ports are open, I can see the mtu test going in a packet scan, but it never works out.
I've done all the simple stuff like reboot everything but that didnt seem to help at all.