Comment 4 for bug 1584393

This indeed looks like a deadlock. It could be broken by openssh's if-up.d script if it reloads ssh asynchronously instead of blocking on it. It would be even better to finally get rid of this silly hack and make openssh use IP_FREEBIND properly :-)

I'm very reluctant to make invoke-rc.d reload itself async. This is too regression prone, as a scripts might depend on the reload actually being done after the call.

Also, low priority. Restarting "networking" has never worked under upstart at all, and it mostly works now (can't reproduce this on several machines). So this is mostly a case of "don't do that then"..