westplay on 02 October 2010
Try forwarding the xbox live port to one xbox. When you have both xboxes online the one you have forwarded its live port will be able to become host and have its NAT open but the second one won't.
If you play the same game and you become host the second xbox in the house will have very low ping since it will be connected to your xbox so both of you will have very low ping.
Now if you are both connected, play different games and want both to be able becoming hosts it cannot be done because all xboxes communicate on the same port and only one xbox can have that port open.
