loopback medium now builds

Ignoring missing protos for now, going to do a cproto run at the end
of it all.

Still hitting the occasional spatch weirdness but overall requires
very little fixing.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
ipaux.c compiles

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>