Improving the Reaction of Customer Edge Routers to Renumbering Events

Document Type Replaced Internet-Draft (individual)
Authors Fernando Gont  , Jan Zorz  , Richard Patterson 
Last updated 2019-11-01
Replaced by RFC 9096
Stream (None)
Intended RFC status (None)
Expired & archived
plain text htmlized pdfized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-v6ops-cpe-slaac-renum
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In scenarios where network configuration information related to IPv6 prefixes becomes invalid without any explicit signaling of that condition (such as when a CPE crashes and reboots without knowledge of the previously-employed prefixes), hosts on the local network will continue using stale prefixes for an unacceptably long period of time, thus resulting in connectivity problems. This document specifies improvements to Customer Edge Routers that help mitigate the aforementioned problem for typical residential and small office scenarios.


Fernando Gont (
Jan Zorz (
Richard Patterson (

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