fwip —
IP over IEEE1394 driver
The fwip driver provides standard IP over IEEE1394 based
  on the protocols described in RFC 2734 and RFC 3146.
The
    ieee1394if(4) and
    fwohci(4) drivers must be
    configured in the kernel as well.
The fwip device driver first appeared in
  FreeBSD 5.3. It was added to NetBSD
  4.0.
The fwip driver and this manual page were written by
  Doug Rabson, based on earlier work by
  Hidetoshi Shimokawa. It was added to
  NetBSD 4.0 by KIYOHARA
  Takashi.
This driver currently does not support the MCAP protocol for multicast IP over
  IEEE1394. Multicast packets are treated as broadcast packets which is
  sufficient for most trivial uses of multicast.