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Gratuitous Neighbor Discovery: Creating Neighbor Cache Entries on First-Hop Routers

Document Type Replaced Internet-Draft (6man WG)
Expired & archived
Author Jen Linkova
Last updated 2020-01-09 (Latest revision 2019-11-26)
Replaced by RFC 9131
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Adopted by a WG
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-6man-grand
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Neighbor Discovery (RFC4861) is used by IPv6 nodes to determine the link-layer addresses of neighboring nodes as well as to discover and maintain reachability information. This document updates [RFC4861] to allow routers to proactively create a Neighbor Cache entry when a new IPv6 address is assigned to a host. It also updates [RFC4862] and recommends hosts to send unsolicited Neighbor Advertisements upon assigning a new IPv6 address. The proposed change will minimize the delay and packet loss when a host initiate connections to off-link destination from a new IPv6 address.


Jen Linkova

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)