Dear Maintainer,

The systemd-network packaged in Trixie has an issue with the DHCPv4
UserClass option. When you use it, it doesn’t take into account what you
put as a value, and it always sends 01 90 in the packet. The DHCPv4
packet is therefore incorrect.

It is a regression and it seems there is an upstream issue resolved
about it :
https://github.com/systemd/systemd/issues/41774 .

Could you please backport this commit in trixie to make the option
usable again and recover the feature ?

Thank you