using sysctl.conf to set hidden interfaces

[Jeremy Hansen <jeremy@xxxxxxxxxxxx>]

I've noticed that using rh's sysctl.conf (don't know if this is rh
specific) to set the sysctl parameters for hidden loopback interface for
direct method doesn't seem to really work for the loopback interface.  I
assume this is because sysctl is processed before the loopback interface
exists.  Is this the case.  Of course this isn't like a major deal, it's
just that in Ultramonkey docs it doesn't seem to mention this and it does
seem to rely on making these settings in sysctl.conf.

-jeremy