hearing about fedora proposing adding ipv6-mostly support to Fedora 45 made me look into how to set up that kind of network. Ended up coming across a blog post of someone doing that:
https://varunpriolkar.com/2026/03/building-a-mostly-ipv6-only-home-network/

might look at setting up such a thing down the line myself
Building a Mostly IPv6 Only Home Network โ€“ Varun Sinai Priolkar

Changes/IPv6-Mostly Support In NetworkManager - Fedora Project Wiki

on a related note, apparently nat64 is basically a one-liner in OpenBSD's pf.conf: https://obtusenet.com/blog/dns64-nat64-on-openbsd/
DNS64 + NAT64 on OpenBSD

What do you do when your machines only communicate on IPv6 and you need to connect to an IPv4 only service? Translate.

Obtuse Networking
@mikoto I never thought about doing ipv6 for local stuff  
I was just frustrated at never being able to access ipv6 internet - even following guides for using an ipv4 to ipv6 relay thingy
@bunni easiest way is to get a wireguard tunnel to an ipv6 server.

Right now I am lucky to have IPv6 support directly from my ISP, complete with a /56 prefix.
@mikoto I guess I could tunnel to hetzner vps... idk if it's a really good idea but it should work...
@bunni if you want to do the stuff in that article you'd probably need to look for someone who gives more than a /64. Hetzner's /64 allocations are fine if you just want to get IPv6 connectivity without too much hassle.