Comment 0 for bug 1912826

I would like to request a small fix in the systemd unit file knockd.service. Please add the [Unit] line

Wants=network-online.target

Bug description:
When the system starts, the knockd daemon fails with a message "knockd[1012]: could not open eno1: eno1: That device is not up". This bug was also described here:
https://bugzilla.redhat.com/show_bug.cgi?id=1730634

In accordance with the recommendations in the systemd.unit documentation, it should be sufficient to accompany the After= option with a Wants= option.

This fixed the issue for me; and in the syslog I could see that the network manager comes online before the knockd daemon (as required), instead of after.

Tested on Linux Mint 20.1 that is based on Ubuntu focal (knockd 0.7-1ubuntu3).