Skip to main content

Unique IPv6 Prefix Per Host

Document Type Replaced Internet-Draft (individual)
Authors John Jason Brzozowski , Gunter Van de Velde
Last updated 2015-10-19
Replaced by RFC 8273
Stream (None)
Intended RFC status (None)
Expired & archived
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-v6ops-unique-ipv6-prefix-per-host
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This Internet-Draft is no longer active.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:


In some IPv6 environments the need has arisen for hosts to be able to utilise a unique IPv6 prefix even though the link or media may be shared. Typically hosts (subscribers) on a shared network, like Wi- Fi or Ethernet, will acquire unique IPv6 addresses from a common IPv6 prefix that is allocated or assigned for use on a specific link. Benefits of a unique IPv6 prefix compared to a unique IPv6 address from the service provider are going from enhanced subscriber management to improved isolation between subscribers. In most deployments today IPv6 address assignment from a single IPv6 prefix on a shared network is done by either using IPv6 stateless address auto-configuration (SLAAC) and/or stateful DHCPv6. While this is still viable and operates as designed there are some large scale environments where this concept introduces significant performance challenges and implications, specifically related to IPv6 router and neighbor discovery. This document outlines an approach utilising existing IPv6 protocols to allow hosts to be assigned a unique IPv6 prefix (instead of a unique IPv6 address from a shared IPv6 prefix).


John Jason Brzozowski
Gunter Van de Velde

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