[rfc-dist] RFC 8978 on Reaction of IPv6 Stateless Address Autoconfiguration (SLAAC) to Flash-Renumbering Events

rfc-editor at rfc-editor.org rfc-editor at rfc-editor.org
Wed Mar 10 12:05:54 PST 2021


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        RFC 8978

        Title:      Reaction of IPv6 Stateless Address 
                    Autoconfiguration (SLAAC) to Flash-Renumbering Events 
        Author:     F. Gont,
                    J. Žorž,
                    R. Patterson
        Status:     Informational
        Stream:     IETF
        Date:       March 2021
        Mailbox:    fgont at si6networks.com,
                    jan at 6connect.com,
                    richard.patterson at sky.uk
        Pages:      11
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-v6ops-slaac-renum-05.txt

        URL:        https://www.rfc-editor.org/info/rfc8978

        DOI:        10.17487/RFC8978

In scenarios where network configuration information related to IPv6
prefixes becomes invalid without any explicit and reliable signaling
of that condition (such as when a Customer Edge router crashes and
reboots without knowledge of the previously employed prefixes), hosts
on the local network may continue using stale prefixes for an
unacceptably long time (on the order of several days), thus resulting
in connectivity problems. This document describes this issue and
discusses operational workarounds that may help to improve network
robustness. Additionally, it highlights areas where further work may
be needed.

This document is a product of the IPv6 Operations Working Group of the IETF.


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