netplan disables wake-on-lan

[Jurjen Bokma]

I'm not sure this counts as a bug.
We'd like to leave the wake-on-lan setting untouched, but NetPlan seems to be able to set it to any value, but not to leave it as is.

On Ubuntu 22.04 with netplan.io 0.105-0ubuntu2~22.04.3, we don't specify any 'wakeonlan' setting in /etc/netplan/*, yet NetPlan generates a file
  /run/systemd/network/10-netplan-eth0.link
that turns wake-on-lan off:
'''
[Link]
Name=eth0
WakeOnLan=off
'''

I think this is because NetPlan's default for the wakeonlan setting is 'off'.
However, we'd like to be able to leave whatever wake-on-lan setting is on the nic to remain untouched.
I don't wish to express an opinion on the wisdom of a default of 'off'. Being able to specify 'wakeonlan=nomodify' would suffice. But there doesn't seem to be such an option (short of editing the generated /run/systemd/network/10-netplan-eth0.link directly.

Kind Regards
Jurjen

[Lukas Märdian (slyon)]

This is a valid feature request, not necessarily a bug. Netplan's default behavior is having "wakeonlan: false", so we cannot easily change that default.

But we could probably port the "wakeonlan" boolean value to something similar as NetplanTristate type, accepting an additional value.

As a workaround for now, you can create an override config:
$ cat /etc/systemd/network/10-netplan-eth0.link.d/override.conf
[Link]
WakeOnLan=