[systemd-devel] L2TP NetDev not starting

[Tr4sK]

Hi,
I'm trying to get my head around to connect my debian box to a mikrotik 
router.

I tried to keep it simple and made it work with the ip l2tp commands.
But, with the same parameter in a .netdev file it does not appear.

To be clear, it's not a mikrotik issue.

I gathered informations about it here:
https://paste.sh/fiKH_IFO#g9yTHCsiJYj-bccB3l3HP8uo

I upgraded systemd to the last version available in backport:

systemd/stable-backports,now 254.5-1~bpo12+3 amd64  [installé]
systemd/stable 252.22-1~deb12u1 amd64

Did anyone made it work ?

Cheers.