Thank you for this!
I have multiple XBox Ones and was getting strict nat with just UPnP enabled.
From this tutorial, after enabling UPnP, I set up an group Alias for the xboxs and then created the NAT Outbound Static port rule using that Alias. With that rule I was able to get an Open NAT status on both consoles at the same time.
Just as a disclaimer, I have not tried multiplayer yet to verify, but things look promising.
I have multiple XBox Ones and was getting strict nat with just UPnP enabled.
From this tutorial, after enabling UPnP, I set up an group Alias for the xboxs and then created the NAT Outbound Static port rule using that Alias. With that rule I was able to get an Open NAT status on both consoles at the same time.
Just as a disclaimer, I have not tried multiplayer yet to verify, but things look promising.