Comment 17 for bug 2060311

With version ~ppa5 we're now skipping the activation of systemd-networkd-wait-online.service in case all Netplan interfaces are defined to be "optional: true", using "ConditionPathIsSymbolicLink=" on Netplan's s-n-wait-online.service enablement link, that's only set when we have non-optional interfaces.

All the magic happens in /run/systemd/system/systemd-networkd-wait-online.service.d/10-netplan.conf override under the generic "systemd-networkd-wait-online.service" umbrella.

Code is up-to-date in https://github.com/canonical/netplan/pull/456
Test buidls in PPA: https://launchpad.net/~slyon/+archive/ubuntu/lp2060311/+packages