SNMP v3 Stops Working When Device's IP Changes

The network that we have OpManager installed is fairly dynamic and the IP addresses of some of the devices change on a regular basis. A recurring problem that we are having is that when the IP address of a device changes and we update it in OpManager (and its associated entry in the local /etc/hosts file), we are no longer able to query SNMP v3 statistics from the device.

We can still poll it using snmpgets from the linux command line and browse it using your built in mib browser, but it will not work from the OpManager program. Every once in a while we are able to fix it by deleting and re-adding the device, but this does not always work. Any help to this problem would be great.

Thanks,

Quinn