node-id: Functions for extra configuration data
llsec: Allow for sharing PRNG
llsec: Compromise-resilient 802.15.4 security
apkes: Fully pairwise keys scheme
apkes: Avoid nonce reuse in HELLOACKs, authenticate short address
apkes: Trickle-based broadcasting of HELLOs
apkes: Automatic removal of disappeared neighbors