I have two xboxs in one house. I can't join in my brother's fireteam. I'm about to buy a net gear r6400 router for the upnp because my provided uverse pace router does not have upnp, but I'm not sure how to connect the router to the uverse router exactly (I still need my pace router for my phones so I want to know how to bridge the net gear to the pace) and once it is all set up, is there anything more I have to do besides enabling the upnp?