Need help setting up 2 xboxes on same router.

Hello,

My brother and I are trying to play wirelessly on the same router but having issues. It's a linksys.

I have set up my port triggering as follows: Triggered/Forwarded Ranges: 88-88, 3074-3074, 53-53, 80-80.

My MTU is 1364, Upnp is enabled, and DMZ is disabled.

When both Xboxes are connected, one will have open NAT while the other strict. Am I missing something here? Is it modem related? Any help is appreciated.

Thanks.