cobbler/cobbler — pull request #615 by aronparsons (2013-10-07 03:05:46+00:00)
Title: BUGFIX: return 1 when no MAC is passed to mac_exists()

If an interface doesn't have a MAC, mac_exists() is called with an
empty string that returns a list of all interfaces names. Instead,
return 1 from the function so that the "network" line is not
generated.