This document defines lightweight secure neighbor discovery for low-
power and lossy networks. The nodes generate a Cryptographically
Generated Address, register the Cryptographically Generated Address
with a default router and periodically refresh the registration.
Modifications to 6lowpan Neighbor Discovery protocol are described
for secure neighbor discovery for low-power and lossy networks.
Cryptographically generated address and digital signatures are
calculated using elliptic curve cryptography, so that the
cryptographic operations are suitable for low power devices.