Registration Extensions for IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Neighbor Discovery
RFC 8505

Approval announcement
Draft of message to be sent after approval:

From: The IESG <>
To: IETF-Announce <>
Cc: The IESG <>,,,, Gabriel Montenegro <>,,,
Subject: Protocol Action: 'Registration Extensions for 6LoWPAN Neighbor Discovery' to Proposed Standard (draft-ietf-6lo-rfc6775-update-21.txt)

The IESG has approved the following document:
- 'Registration Extensions for 6LoWPAN Neighbor Discovery'
  (draft-ietf-6lo-rfc6775-update-21.txt) as Proposed Standard

This document is the product of the IPv6 over Networks of
Resource-constrained Nodes Working Group.

The IESG contact persons are Suresh Krishnan and Terry Manderson.

A URL of this Internet Draft is:

Technical Summary

	   This specification updates RFC 6775 - 6LoWPAN Neighbor Discovery, to
	   clarify the role of the protocol as a registration technique,
	   simplify the registration operation in 6LoWPAN routers, as well as to
	   provide enhancements to the registration capabilities and mobility
	   detection for different network topologies.

Working Group Summary

There has been plenty of discussion about these extensions in the working group. This document started in Oct. 2016 as an individual submission, but ideas were discussed even previous to that, including a requirements document (draft-thubert-6lo-rfc6775-update-reqs) which fed into this document, 6775bis. There have been 10 revisions based on implementation experience. Initially, it was a controversial document since it affects how IPv6 ND works in certain networks. This prompted some concern from IPv6 folks (e.g., Lorenzo Colitti) concerned that these modifications were not generally applicable to all link layers or situations. In response, the authors made changes to clarify the scope of the extensions. Section 2, in particular was modified as a result of these debates and exchanges.

Document Quality

These extensions have been implemented in open source (OpenWSN, Cisco IOS) and have been tested in 6TiSCH/6lo ETSI Plugtest.


   Gabriel Montenegro is the Document Shepherd. Suresh Krishnan is the Responsible Area Director.