On Sat, Feb 27, 2021 at 07:44:51AM +0100, Emmanuel Dreyfus wrote: > The Nintendo Switch reports a B grade. However, I do not understand how > source ports can be preserved on a 1:n IP addresses mapping, I suspect > they get preserved most of the time?
I would guess the console tries to learn its outside port and IP and if it can not talk to a UPnP daemon on the router just tries a 1:1 mapping. Martin
