IPv6

https://www.jumpingbean.co.za/blogs/mark/set-up-ipv6-lan-with-linux

Buzzword of the day SLAAC (Stateless Automatic Address Configuration)  AKA Autoconfig

https://wiki.gentoo.org/wiki/QEMU/KVM_IPv6_Support
https://www.berrange.com/posts/2011/06/16/providing-ipv6-connectivity-to...

(Maybe use Router Advertisement Daemon (radvd) )

https://jamielinux.com/docs/libvirt-networking-handbook/appendix/run-rad...