Fun fact, Incus is being used as underlying infrastructure for the NorthSec CTF, i.e. in an "as hostile as it can get" environment. If you have close to a hundred teams of hackers on your systems trying to break stuff, I think it speaks for Incus and its capabilities regarding isolation and limits.
In case you are interested, Zabbly has some interesting behind-the-scenes on Youtube (not affiliated).
Running a router built with systemd-networkd and kea myself, and I quite like both, even though I have not integrated them with each other. Would you be willing to share some details on how you use these components? Especially corerad as I am not familiar with it and wonder on the why+how, considering networkd does NDP. Thanks
[0] https://linuxcontainers.org/incus/docs/main/howto/cluster_ma...
[1] https://linuxcontainers.org/incus/docs/main/howto/move_insta...