Comment 15 for bug 1949104

I can also confirm that 0.103-0ubuntu5~20.04.3 from focal-proposed fixes this bug.

root@xxx:~# dpkg -l | grep netplan
ii libnetplan0:amd64 0.103-0ubuntu5~20.04.3 amd64 YAML network configuration abstraction runtime library
ii netplan.io 0.103-0ubuntu5~20.04.3 amd64 YAML network configuration abstraction for various backends

root@xxx:~# netplan try
Warning: Stopping systemd-networkd.service, but it can still be activated by:
  systemd-networkd.socket
Do you want to keep these settings?

Press ENTER before the timeout to accept the new configuration

Changes will revert in 118 seconds
Reverting.
Warning: Stopping systemd-networkd.service, but it can still be activated by:
  systemd-networkd.socket

root@xxx:~# netplan try
Warning: Stopping systemd-networkd.service, but it can still be activated by:
  systemd-networkd.socket
Do you want to keep these settings?

Press ENTER before the timeout to accept the new configuration

Changes will revert in 119 seconds
Configuration accepted.