to allow for creating and securing frames in advance; Create and secure frames in advance when sending bursts; Do neither recreate nor resecure frames that come from phase
would create a header with the current packet information.
This allows sicslowpan to calculate the max payload size without
consuming a sequence number or clearing/restoring the packet buffer.
the packetbuf from packet attributes. Two framer modules are included,
one that creates 802.15.4 frame headers, and one that creates a
minimal "nullmac"-style header that only contains the link-local
addresses.
