If using failover FQDN is essential - everywhere. Import from CSV will not use FQDN even if specified in InterfaceIP_0 field. Thus failover can not work unless each extn is changed manually. Suggestions: 1. If failover configured default EVERYTHING to use FQDN - or have option to do so. 2. Make CSV import honour the InterfaceIP_0 field. 3. Failover should have some checking process that can be run (automatically?) to confirm that everything will work for failover (is using FQDN). Current failover system has several flaws which are made worse by other parts of the system such as this bug. This bug is really not funny on a system of any size as it takes excessive time to go and correct the extns so they'll failover.