2 Xbox's won't retrieve Nat Type. R1 Router

[DillyDally5549]

This problem has seemed to appeared probably since the router was accidentally switched off along with the Virgin Modem at the plug, and despite a restart of both router and modem, adding Xbox to DMZ, opening port 3074, having Xbox go directly through a public DNS server as opposed to going through my local DNS server, unblocking UDP 443 and 53, nothing has worked.

The same thing seems to be happening on my brother's Xbox and for me the problem is disruptive enough as it causes me to be booted from GTA lobbies. 

I think I''ll probably move onto another router that's more advanced, less buggy and cheap as well as this router has several unaddressed issues with one of them  being the settings icon randomly showing a pause/play symbol and you can't access the settings page without restarting the thing. Pretty poor really.

 

However can anyone advise the possible issue in the meantime?

[Netduma Fraser]

Is the Virgin modem in modem mode or router mode? If router mode and you restarted it then you probably need to update the DMZ on it to show the correct WAN IP for the R1, that should then allow for an Open NAT.

[DillyDally5549]

Virgin Hub is in modem mode. There is also no option for DMZ when it is in modem mode.

[Netduma Fraser]

You'll need to keep the DMZ clear on the R1 if you want to have both consoles open, if UPnP isn't working on it's own then you will need to check which ports each console is using on the console itself and if necessary select an alternative port on the console and then port forward that port for the relevant console