" ip dns source-interface loopback 0" command throws errors.
file failed
: Permission denied
could not open /etc/tdns_si_entries file
writing failed
% Source intf config operation failed. Error 1
Cisco marked this bug fixed, but it appears to have reared it's ugly head on the N7K platform with code 7.3(0)D1(1). This version of code came with the switch. I'll be downgrading to 6.2(16) as soon as I get it connected to the LAN.