
There were two "uninitialized variable used" warnings..
one was due to a check for $type ne "", which I changed to
((defined $type) && ($type ne "")).

The other is due to NULL values in the iface column of the interfaces table.
Rob is going to change the schema to disallow such NULLs.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome