Hi, This patch is fine. Increment and set of DSN value should be done by mac802154 layer. But there is also a known issue with increment of DSN value while 6lowpan fragmentation. On a fragmented packet 6lowpan calls dev_hard_header once, then many times lowpan_fragment_xmit, depending on the number of fragments which is needed. Each call of lowpan_fragment_xmit will have the same DSN value. Maybe we should put the increment of DSN in "mac802154/tx.c" before calling xmit callback from driver (Just an idea). What do you think about that? - Alex -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html