[anecdotal1]

A lot of people thought IPv6 tunnels would solve it, but they underestimated the MTU issues it brings.

There's a complementary video that goes along with this here: https://www.youtube.com/watch?v=1qyTtSY7c4k

I agree with Geoff here that your address needs to be treated like a session identifier not a permanent endpoint identifier like a phone number. We need to migrate to a better name based addressing system, really. DNS isn't evolving because we thought IPv6 would solve it. We shouldn't have unique names AND unique addresses. Unique names should be enough.

[PaulHoule]

As it is I am not happy with the state of naming, particularly if you want to overlay local names on a LAN. For one thing, you can't could today that you can point every device to point to a DNS server you control.