6lowpan: always enable link-layer acknowledgments

This feature is especially important when using fragmentation, because
the reassembly mechanism cannot recover from the loss of a fragment.

Note that some hardware ignore this flag and not will not transmit
acknowledgments even if this is set.

Signed-off-by: Tony Cheneau <tony.cheneau@amnesiak.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tony Cheneau 2013-03-25 17:59:23 +00:00 • committed by David S. Miller
commit f333a15a3e