OpenVPN monitoring dies

[gerdesj]

The OpenVPN management daemon seems to die on me after a while.  The actual symptom I see is that the monitoring page and dashboard widget shows:

Unable to contact daemon	
0	 Service not running?

Nothing appears in the logs to indicate a problem and the tunnels themselves are up.  If I simply go into the config and save it (presumably forces a restart) or restart the services then it comes back for a while.  I think but can't prove yet that it is due to a link going down causing a restart of the tunnel(s).

I have two pfSenses running on snapshots at the moment and both do this.  Not sure how to diagnose this and can't find a prior post here on a similar theme.