Clearly ipv6 is very flawed and by now the community should consider it a failure and work on a viable replacement.
We need an internet protocol that is backwards compatible with ipv4 and does not require deploying and maintaining entirely parallel
networks, interfaces, firewalls, routing, etc.
If ipv6 actually was viable, the internet would have cut over. Instead we’re on a path to support ipv4 and ipv6 in parallel essentially forever.
It’s impossible to finish a transition when the old version has no end of life in sight.