Comment 14 for bug 1718227

ifmetric is a package that sets route metrics - which seems awfully pointless, 'metric' is already supported natively by ifupdown and by netplan. This does not need integration.

(The only possible utility is that ifmetric lets you set metrics on the route for the local network, which netplan does not; but in the unlikely event that this is useful, it should be implemented by extending netplan.)