Comment 2 for bug 2016012

This issue seems to be directly related to this bug: https://bugs.launchpad.net/netplan/+bug/1999178.
Running "udevadm trigger" or "udevadm test /dev/console" just throws a warning message but does not block of a minute:

  /usr/lib/udev/rules.d/67-azure-console.rules:2 Unknown group 'syslog', ignoring

However, running "systemctl daemon-reload" with systemd debug logs enabled clearly shows the one minute delay being triggered by the netplan generator:

  Apr 12 11:15:24 lunar-minimal systemd[724]: /usr/lib/systemd/system-generators/systemd-sysv-generator succeeded.
  Apr 12 11:16:24 lunar-minimal systemd[724]: /usr/lib/systemd/system-generators/netplan succeeded.

My conclusion for now is that the bug in netplan is only triggered if a udev rule cannot be satisfied. This is why we are only seeing this issue with Minimal (no syslog group) Azure (udev rule present) Lunar (bad version of netplan) images.