Analysis of Solution Proposals for Hosts to Learn NAT64 Prefix
RFC 7051
Document | Type | RFC - Informational (November 2013; No errata) | |
---|---|---|---|
Authors | Jouni Korhonen , Teemu Savolainen | ||
Last updated | 2015-10-14 | ||
Replaces | draft-korhonen-behave-nat64-learn-analysis | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 7051 (Informational) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Martin Stiemerling | ||
IESG note | Dan Wing (dwing@cisco.com) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) J. Korhonen, Ed. Request for Comments: 7051 Broadcom Category: Informational T. Savolainen, Ed. ISSN: 2070-1721 Nokia November 2013 Analysis of Solution Proposals for Hosts to Learn NAT64 Prefix Abstract Hosts and applications may benefit from learning if an IPv6 address is synthesized and if NAT64 and DNS64 are present in a network. This document analyzes all proposed solutions (known at the time of writing) for communicating whether the synthesis is taking place, what address format was used, and what IPv6 prefix was used by the NAT64 and DNS64. These solutions enable both NAT64 avoidance and local IPv6 address synthesis. The document concludes by recommending the standardization of the approach based on heuristic discovery. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7051. Korhonen & Savolainen Informational [Page 1] RFC 7051 Learning NAT64 Prefix November 2013 Copyright Notice Copyright (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 2. Terminology .....................................................4 3. Issues ..........................................................5 4. Background ......................................................6 5. Proposed Solutions to Learn about Synthesis and Network-Specific Prefix .........................................7 5.1. DNS Query for a Well-Known Name ............................7 5.1.1. Solution Description ................................7 5.1.2. Analysis and Discussion .............................7 5.1.3. Summary .............................................8 5.2. EDNS0 Option Indicating AAAA Record Synthesis and Format ...8 5.2.1. Solution Description ................................8 5.2.2. Analysis and Discussion .............................9 5.2.3. Summary ............................................10 5.3. EDNS0 Flags Indicating AAAA Record Synthesis and Format ...10 5.3.1. Solution Description ...............................10 5.3.2. Analysis and Discussion ............................10 5.3.3. Summary ............................................11 5.4. DNS Resource Record for IPv4-Embedded IPv6 Address ........11 5.4.1. Solution Description ...............................11 5.4.2. Analysis and Discussion ............................12 5.4.3. Summary ............................................12 5.5. Learning the IPv6 Prefix of a Network's NAT64 Using DNS ...13 5.5.1. Solution Description ...............................13 5.5.2. Analysis and Discussion ............................13 5.5.3. Summary ............................................14 5.6. Learning the IPv6 Prefix of a Network's NAT64 Using DHCPv6 ..............................................14 5.6.1. Solution Description ...............................14 5.6.2. Analysis and Discussion ............................15 5.6.3. Summary ............................................15 Korhonen & Savolainen Informational [Page 2] RFC 7051 Learning NAT64 Prefix November 2013 5.7. Learning the IPv6 Prefix of a Network's NAT64Show full document text