Forum Discussion
Can't Play Basic Online Games Because of Nat Type Issue
Don't know much of anything about networking, just know I can't play super Smash Brothers and other games on my Nintendo switch! I have the newest T-Mobile home internet router, the black rectangular...
It is a problem with the T-Mobile gateway and their NAT implementation. If you want to see more on it just search for Nintendo in the TV & Home Internet community forum conversations and you will get lots of conversations where the details are stated.
Actually start with this one: Nintendo Switch w/NOK 5G21 Gateway
You will have the low down you need. Maybe not what you want to hear but the scoop.
