464XLAT Optimization

Document Type Replaced Internet-Draft (v6ops WG)
Authors Jordi Palet Martinez  , Alejandro D'Egidio 
Last updated 2020-07-15 (latest revision 2019-11-04)
Replaced by draft-ietf-v6ops-464xlat-optimization
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
plain text xml htmlized pdfized bibtex
Stream WG state In WG Last Call
Document shepherd Owen DeLong
IESG IESG state Replaced by draft-ietf-v6ops-464xlat-optimization
Consensus Boilerplate Yes
Telechat date
Responsible AD (None)
Send notices to Owen DeLong <owen@delong.com>

This Internet-Draft is no longer active.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


This document proposes possible solutions to avoid certain drawbacks of IP/ICMP Translation Algorithm (SIIT) when the destinations are available with IPv6. When SIIT is used as a NAT46 and IPv4-only devices or applications initiate traffic flows to dual-stack CDNs (Content Delivery Networks), Caches or other network resources (in the operator network or Internet), those flows will be translated back to IPv4 by a NAT64. This is the case for 464XLAT and MAP-T.


Jordi Palet Martinez (jordi.palet@theipv6company.com)
Alejandro D'Egidio (adegidio@telecentro.net.ar)

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