Comment 5 for bug 1810583

There are three cases:
- upgrades from xenial with ifupdown
- fresh installs with netplan/systemd-networkd
- fresh installs with network-manager

I think the right way to integrate this with networkd is to ship a networkd-dispatcher script to do the right thing w.r.t. keepalived

http://manpages.ubuntu.com/manpages/bionic/man8/networkd-dispatcher.8.html