So would anyone actually put users real ipv6 addresses out on public? I am not talking about allowing incoming "connections" (ie. stateless)? Sometimes the expensive even if trivial is justified?
Also most orgs that I have seen do split DNS using some other internal hostname system. Keeping the internal structure secret.
And does IPv6 allow for mobility, NUP. So it's really nothing special.
Full disclosure, I don't guve a shit about the RFCs and I NAT IPv6 connections and use private IPv6 addresses internally. Its because it worked so well for IPv4.
As far as I can tell IPv6 means loss of privacy if done by the RFCs