Management   Data
+----------+---------+---------+
|   CoAP   |  CoAP   | legacy  |
+----||----+---||----+---||----+
.   UDP    .  UDP    |   UDP   |
................................
.   IPv6   .  IPv6   .  IPv6   .
+------------------------------+
|    SCHC Header compression   |
|      and fragmentation       |
+------------------------------+
|      LPWAN L2 technologies   |
+------------------------------+
         Dev or NGW