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Discovery of a Network-Specific NAT64 Prefix using a Well-Known Name

Document type: Replaced Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2011-05-27 (latest revision 2011-02-15)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-behave-nat64-discovery-heuristic
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active.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


This document describes a method for detecting presence of DNS64 and for learning IPv6 prefix used for protocol translation on an access network without explicit support from the access network. The method depends on existence of a known IPv4-only domain name. The information learned enables applications and hosts to perform local IPv6 address synthesis and on dual-stack accesses avoid traversal through NAT64.


Teemu Savolainen <>
Jouni Korhonen <>

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