> Are there any interfaces, besides lo0, that are DLT_NULL ?

I've fixed the if_ieee1394subr.c, which is not DLT_NULL actually.

Just looking net/ director only, I've found these files should be fixed.
	if_loop.c
	if_sl.c
	if_strip.c
	if_tun.c

	if_faith.c
	if_gif.c
	if_stf.c

Note that the last three is the files from KAME and should be fixed in
the KAME tree.

Atsushi Onoe