Normally we would do this via netplan. But netplan lacks support of
VXLAN (https://bugs.launchpad.net/netplan/+bug/1764716). Therefore the
next option is to use systemd.
In the current systemd version (as in focal) this happens:
https://github.com/systemd/systemd/issues/17064 and the fix suggested
I understand the need for the parameter upstream, however backporting
features to existing releases typically needs a bit more justification
than just the fact it's nice to have. Can you explain why you can't just
use the existing method (in focal) for creating a vxlan device?
Specifically, setting
