Comment 1 for bug 993379

Seems weird to me, but I'm not against fixing that part of the configuration provided it provably doesn't introduce regressions (delays in booting up, waiting for the network). NM itself should be checking that lo is up and has some code (disabled I think in Ubuntu) that tries to bring lo up. Maybe it's worth checking if we want that to be done by NM... but fixing the upstart condition looks like an easy way to tackle the issue.