Multihoming Using IPv6 Addressing Derived from AS Numbers

Document Type Expired Internet-Draft (individual)
Author Pekka Savola 
Last updated 2004-02-02
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In IPv6, the current IPv4 site multihoming practises have been operationally disabled, to prevent a creation of an unmanageable swamp of more specific routes. Some argue that the lack of a comprehensive site multihoming solution is hindering the deployment of IPv6. This memo presents a few proposals for end-sites with autonomous system (AS) number to be able to derive a provider independent block of addresses from the first half of the 16-bit AS- number space. This could enable a temporary IPv6 site multihoming solution for those that already employ similar mechanisms in IPv4.


Pekka Savola (

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