Comment 5 for bug 865399

Verified the package nova-network 2011.3+git20111117-0ubuntu1 in oneiric-proposed resolves this issue without regression.

As a test case, I've run one instance, killed the dnsmasq process that nova-network creates, create an empty pid file in place of the original dnsmasq pid file, and run another instance on the same host. The dnsmasq process and successfully restarted without exceptions. Log available: http://paste.ubuntu.com/775578/

The same test case prior to this fix results in the following traceback in nova-network.log - http://paste.ubuntu.com/775581/