Discovery of the IPv6 Prefix Used for IPv6 Address Synthesis
RFC 7050, “Discovery of the IPv6 Prefix Used for IPv6 Address Synthesis”, is a Proposed Standard document published in November 2013 by T. Savolainen, J. Korhonen, D. Wing. It has since been updated by RFC 8880. The canonical text is published by the RFC Editor.
Abstract
This document describes a method for detecting the presence of DNS64 and for learning the IPv6 prefix used for protocol translation on an access network. The method depends on the existence of a well-known IPv4-only fully qualified domain name "ipv4only.arpa.". The information learned enables nodes to perform local IPv6 address synthesis and to potentially avoid NAT64 on dual-stack and multi-interface deployments.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7050 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7049 Concise Binary Object Representation
- RFC 7051 Analysis of Solution Proposals for Hosts to Learn NAT64 Prefix
- RFC 7052 Locator/ID Separation Protocol MIB
- RFC 7047 The Open vSwitch Database Management Protocol
- RFC 7053 SACK-IMMEDIATELY Extension for the Stream Control Transmission Protocol
- RFC 7046 A Common API for Transparent Hybrid Multicast
- RFC 7054 Addressing Requirements and Design Considerations for Per-Interface Maintenance Entity Group Intermediate Points
- RFC 7045 Transmission and Processing of IPv6 Extension Headers