[1ncorrect]

Using NAT with IPv6 betrays a lack of understanding with how it’s supposed to be used, and a stubborn continuation of IPv4 kludges.

Multiple addresses/prefixes are a required component for IPv6 to function, which I suspect is often the biggest source of misunderstanding from legacy IP competency.

If you need a stable prefix for a host, use a ULA or your own GUA. If you need to provide services from 2 or more upstream networks, configure the host with addresses from each of the delegated prefixes from those networks. If you need to do all of the above, there’s nothing preventing you from configuring them all simultaneously. You can even use the IP and routing stack to provide selective service access and trust thresholds.

Prefix mobility is something that should have been anticipated when IPv6 was being hashed out, and would have made many things much easier, but it’s far from critical, and gives IPvA an easy killer use case.