i am running a number of isr's that have ip sla configured. I originally had the polling nodes for sla set for the next hop but that didn't work because it wouldn't failover for dirty circuit. I then changed the polling point farther out(to pac bell dns 4.2.2.2)but that causes momentary sla failovers of only a few seconds. That is long enough to cause vpn failover though. What would be a good polling point that would be more reliable.