Used for IPv6 over LoWPAN networks. Example of this is
Bluetooth 6LoWPAN network.
Signed-off-by: NJukka Rissanen <jukka.rissanen@linux.intel.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>