Joseph L. Casale wrote:

Now it seems there is still one last hurdle, when the connection is yanked to simulate a complete outage, asterisk still goes down. I can only assume this happens now as a result of no default gateway?

check the logs? run strace on the process? run tcpdump on the interface(s) to see what traffic it is trying to transmit?

Would setting up a silly route for 0.0.0.0/0 to say 127.0.0.1 for the internal nic in /etc/sysconfig/network-scripts/route-eth1 with a metric higher than what the ISP's dhcp servers default gw would be possibly cure this? My hope is that when the wan nic goes down, a route is still available.

Last I checked the 'metric' number in the linux routing table is really only used when your using a routing daemon. as far as default routes go, it should not have any impact.

I suspect the route is not the issue, I suspect that the app is trying to talk to something external and then fails, it will fail the same if you try to point it to a router that goes nowhere.

tcpdump should be able to tell you who the host is trying to talk to. strace might reveal why.

nate