Symptom
After upgrade from 6.0(4) to 6.2(10), customer lost the config: 'ip radius source-interface loopback10'
Conditions
This CLI behavior was changed in 6.2 where this CLI now works even if loopback interface does not exist.
Seen on N7010 upgrade with SUP1s.
ip radius source-interface loopback10 missing after non-ISSU from 6.0(4) to 6.2(10)
Workaround
manually configure 'ip radius source-interface loopback10'
Further Problem Description
attached supporting documentation
