The IESG has approved the following document: - 'Neighbor Discovery Optimization for Low Power and Lossy Networks (6LoWPAN)' (draft-ietf-6lowpan-nd-21.txt) as Proposed Standard This document is the product of the IPv6 over Low power WPAN Working Group. The IESG contact persons are Ralph Droms and Brian Haberman. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-6lowpan-nd/ Technical Summary This document specifies optimizations for the IPv6 Neighbor Discovery protocol that facilitate its use in 6LoWPAN networks with sleeping nodes, reducing the reliance on subnet-wide multicast and making the protocol more robust to high packet loss rates. A mechanism for Duplicate Address Detection is provided that operates in the presence of sleeping nodes. In addition, the document extends ND to support the dissemination of the shared context that the 6LoWPAN-HC compression format (RFC 6282) relies on to allow compression of arbitrary prefixes in a 6LoWPAN. Working Group Summary This document represents the consensus of the 6LoWPAN community to update RFC 4944 by making the present specification an integral part of 6LoWPAN. There has been strong consensus that the present optimization of the IPv6 Neighbor Discovery protocol is sufficiently important to justify this significant change. Document Quality The document is a product of the 6LoWPAN working group and has been reviewed in detail by a significant number of 6LoWPAN working group members. The principal content of the document has been technically stable for about a year, during which certain fringe cases were identified by implementers and addressed in minor updates to the specification. The specification has been picked up widely in the 6LoWPAN community and has been subject to extensive interoperability testing in vendor organizations such as ZigBee and IPSO. The document is the result of a "reboot" of its development process, in which a number of simplifications have been made by striking potential requirements that earlier versions (pre -09) attempted to address. As it stands, it now represents a strong WG consensus. No IPR disclosures have been made. Personnel Carsten Bormann <cabo@tzi.org> is the Document Shepherd. Ralph Droms <rdroms.ietf@gmail.com> is the Responsible AD.
