Maybe it *is* about time to go #IPv6only. Currently running my desktop without #IPv4 for testing.
The outside #IPv4 world is reachable with #NAT64 provided by #tayga running on my #FreeBSD router/firewall (with pf for stateful #NAT and actual firewalling), great! That's the most important part, I mean, nothing we can do about stubbornly operated v4-only stuff outside.
Now I identify all the stuff still not offering #IPv6 in my home network. Already fixed parts of my mail system and my irssi-proxy (for IRC). But there's more to check ... none of my VPN tunnels currently transport v6 ... and I'm still a bit unsure about all the devices (e.g. switch and access points in my management segment, or stuff like a vacuum robot or a kitchen radio in my IoT segment ... oh boy 😂🙈)