Actually, please disregard the portion of my previous comment where I suspected we should consider patching systemd as well. I no longer think that is necessary. (My test case was flawed.) After correcting the issue (ensuring I was running with the properly-updated dbus fix), I was able to run eight parallel continuous-SSH scripts against the LXC with the fixed dbus (without the systemd patch).
Actually, please disregard the portion of my previous comment where I suspected we should consider patching systemd as well. I no longer think that is necessary. (My test case was flawed.) After correcting the issue (ensuring I was running with the properly-updated dbus fix), I was able to run eight parallel continuous-SSH scripts against the LXC with the fixed dbus (without the systemd patch).
ubuntu@test:~$ uptime
20:13:55 up 4 min, 1 user, load average: 5.87, 3.70, 2.01
Over 10,000 sessions so far, and no issues. Ship it!