Doing so is bogus if the loop-back interface was not configured.
Typically ``network_interfaces="auto"'' will return the list of
interfaces such that "lo0" is not first. Thus there are times when
`dhclient' configs an interface before "lo0" is configured.
Under BSD4.4, there's no need to add the above route, as it will be
automatically generated by the kernel.
PR: conf/14098, misc/15183
Submitted by: luoqi (true identification of the problem)
9e84904436