OK, What I suspected (and kind of confirmed) was that whatever is being
used as the address to ping when the connection status check is enabled
but the specific IP address is unchecked doesn't work in all cases.

To test my theory I turned the connection status check back on, also
checked the use specific address and entered an IP address of a machine
behind the VPN that I knew I could ping.

That worked for 5+ hours yesterday, and for over an hour today.  Then I
started to get failures and again (K)VPNC was doing auto retries and got
into a mode where it would not see the network without Quiting KVPNC and
restarting it.  Then it was fine for a few minutes and repeated.  I
expect that the machine behind the VPN was unable to respond to the ping
request in a timely fashion.  Since I turned off the connection status
check again no problems with the connection going down.

But I wanted to report that it appears that you need to use the specific
IP address option with the connection status check if you are having a
similar problem.  Now to find a machine behind the VPN that doesn't get
bogged down, or increase the timeout for the ping test if that is
possible.

Burt

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vpnc dead peer detection disconnects immediately
https://bugs.launchpad.net/bugs/93413
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