See https://www.rfc-editor.org/rfc/rfc6204.html and its update https://www.rfc-e...

		dfawcus on Aug 3, 2023 \| parent \| context \| favorite \| on: How NAT traversal works (2020) See https://www.rfc-editor.org/rfc/rfc6204.html and its update https://www.rfc-editor.org/rfc/rfc6204.html which were created because of the "NAT adds security" delusion. They address basic requirements for customer edge IPv6 routers, and some consumer devices are now following that.

I believe you meant your second link to be https://www.rfc-editor.org/rfc/rfc7084