Comment 14 for bug 1101779

Once the above problems are fixed we find that the interface
ioctls never return IPv6 information.

What that means for autofs is that we can't detect when an
IPv6 address is a local interface or the address is directly
accessible via a local interface. Consequently bind mounts
can't be used for the localhost6 and all hosts appear to be
at the same proximity so there can't be a preference given
to host directly reachable via a local interface.