IPv6-to-IPv6 Network Prefix Translation
RFC 6296
Document | Type |
RFC - Experimental
(June 2011; Errata)
Was draft-mrw-nat66 (individual in ops area)
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|
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Authors | Fred Baker , Margaret Cullen | ||
Last updated | 2020-01-21 | ||
Replaces | draft-mrw-behave-nat66 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6296 (Experimental) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ron Bonica | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) M. Wasserman Request for Comments: 6296 Painless Security Category: Experimental F. Baker ISSN: 2070-1721 Cisco Systems June 2011 IPv6-to-IPv6 Network Prefix Translation Abstract This document describes a stateless, transport-agnostic IPv6-to-IPv6 Network Prefix Translation (NPTv6) function that provides the address-independence benefit associated with IPv4-to-IPv4 NAT (NAPT44) and provides a 1:1 relationship between addresses in the "inside" and "outside" prefixes, preserving end-to-end reachability at the network layer. Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. 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/rfc6296. Copyright Notice Copyright (c) 2011 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 Wasserman & Baker Experimental [Page 1] RFC 6296 NPTv6 June 2011 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 1.1. What is Address Independence? . . . . . . . . . . . . . . 4 1.2. NPTv6 Applicability . . . . . . . . . . . . . . . . . . . 5 1.3. Requirements Terminology . . . . . . . . . . . . . . . . . 7 2. NPTv6 Overview . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1. NPTv6: The Simplest Case . . . . . . . . . . . . . . . . . 7 2.2. NPTv6 between Peer Networks . . . . . . . . . . . . . . . 8 2.3. NPTv6 Redundancy and Load Sharing . . . . . . . . . . . . 9 2.4. NPTv6 Multihoming . . . . . . . . . . . . . . . . . . . . 9 2.5. Mapping with No Per-Flow State . . . . . . . . . . . . . . 10 2.6. Checksum-Neutral Mapping . . . . . . . . . . . . . . . . . 10 3. NPTv6 Algorithmic Specification . . . . . . . . . . . . . . . 11 3.1. NPTv6 Configuration Calculations . . . . . . . . . . . . . 11 3.2. NPTv6 Translation, Internal Network to External Network . 12 3.3. NPTv6 Translation, External Network to Internal Network . 12 3.4. NPTv6 with a /48 or Shorter Prefix . . . . . . . . . . . . 12 3.5. NPTv6 with a /49 or Longer Prefix . . . . . . . . . . . . 13 3.6. /48 Prefix Mapping Example . . . . . . . . . . . . . . . . 13 3.7. Address Mapping for Longer Prefixes . . . . . . . . . . . 14 4. Implications of Network Address Translator Behavioral Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1. Prefix Configuration and Generation . . . . . . . . . . . 15 4.2. Subnet Numbering . . . . . . . . . . . . . . . . . . . . . 15 4.3. NAT Behavioral Requirements . . . . . . . . . . . . . . . 15 5. Implications for Applications . . . . . . . . . . . . . . . . 16 5.1. Recommendation for Network Planners Considering Use of NPTv6 Translation . . . . . . . . . . . . . . . . . . . . 17 5.2. Recommendations for Application Writers . . . . . . . . . 18 5.3. Recommendation for Future Work . . . . . . . . . . . . . . 18 6. A Note on Port Mapping . . . . . . . . . . . . . . . . . . . . 18 7. Security Considerations . . . . . . . . . . . . . . . . . . . 19 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 19 9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20 9.1. Normative References . . . . . . . . . . . . . . . . . . . 20 9.2. Informative References . . . . . . . . . . . . . . . . . . 20Show full document text