RFC 9131 on Gratuitous Neighbor Discovery: Creating Neighbor Cache Entries on First-Hop Routers
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Subject: RFC 9131 on Gratuitous Neighbor Discovery: Creating Neighbor Cache Entries on First-Hop Routers
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A new Request for Comments is now available in online RFC libraries.
RFC 9131
Title: Gratuitous Neighbor Discovery: Creating Neighbor
Cache Entries on First-Hop Routers
Author: J. Linkova
Status: Standards Track
Stream: IETF
Date: October 2021
Mailbox: furry@google.com
Pages: 20
Updates: RFC 4861
I-D Tag: draft-ietf-6man-grand-07.txt
URL: https://www.rfc-editor.org/info/rfc9131
DOI: 10.17487/RFC9131
Neighbor Discovery (RFC 4861) 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 RFC 4861 to
allow routers to proactively create a Neighbor Cache entry when a new
IPv6 address is assigned to a node. It also updates RFC 4861 and
recommends that nodes send unsolicited Neighbor Advertisements upon
assigning a new IPv6 address. These changes will minimize the delay
and packet loss when a node initiates connections to an off-link
destination from a new IPv6 address.
This document is a product of the IPv6 Maintenance Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
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