Advisory Guidelines for 6to4 Deployment

Document Type Replaced Internet-Draft (individual)
Author Brian Carpenter 
Last updated 2011-04-05 (latest revision 2011-03-11)
Replaced by RFC 6343
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Expired & archived
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IESG IESG state Replaced by draft-ietf-v6ops-6to4-advisory
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document provides advice to network operators about deployment of the 6to4 technique for automatic tunneling of IPv6 over IPv4. It is principally addressed to Internet Service Providers, including those that do not yet support IPv6, and to Content Providers. The intention of the advice is to minimise both user dissatisfaction and help desk calls.


Brian Carpenter (

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