Native Secure Neighbor Discovery API for *BSD (sys diff): 20100812-00-send-sys.diff.
Secure Neighbor Discovery daemon: sendd.
Paper describingthe whole solution presented at AsiaBSDCon 2010, Tokyo: SeND_AsiaBSDCon_2010.pdf.

IETF drafts:
SEND Hash Threat Analysis (draft-ietf-csi-hash-threat-10)
Certificate profile and certificate management for SEND (draft-ietf-csi-send-cert-05)
Subject Key Identifier (SKI) SEND Name Type fields (draft-ietf-csi-send-name-type-registry-06)