this PR to update uip-ds.h comments, this small change is made to ease the track of Tables implementation places
remove definition of UIP_CONF_DS6_ROUTE_NBU
retire 2 old macros DS6_NBR_NBU, DS6_ROUTE_NBU
Update uip-ds6.h
Update contiki-conf.h
Update contiki-conf.h
Update contiki-conf.h
fix doxygen comment
Update uip-ds6.h
This is a fix for Contiki RPL so that it fully supports DAO ACK in
an end-to-end fashion. When DAO is sent it will be forwarded upwards
as before. DAO ACK will be forwarded downwards until it reach the node
that initiated the DAO ACK and unlike before it is not a single-hop
DAO ACK but it is fully reaching the RPL ROOT before any DAO ACK is
sent back. DAO ACK also now fully support different status messages
(success / fail).