IP/ICMP Translation Algorithm
RFC 6145
| Document | Type |
RFC - Proposed Standard
(April 2011; Errata)
Obsoleted by RFC 7915
Obsoletes RFC 2765
|
|
|---|---|---|---|
| Last updated | 2020-01-21 | ||
| Replaces | draft-baker-behave-v4v6-translation | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized with errata bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6145 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | David Harrington | ||
| IESG note | Dave Thaler (dthaler@microsoft.com) is the document shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) X. Li
Request for Comments: 6145 C. Bao
Obsoletes: 2765 CERNET Center/Tsinghua
Category: Standards Track University
ISSN: 2070-1721 F. Baker
Cisco Systems
April 2011
IP/ICMP Translation Algorithm
Abstract
This document describes the Stateless IP/ICMP Translation Algorithm
(SIIT), which translates between IPv4 and IPv6 packet headers
(including ICMP headers). This document obsoletes RFC 2765.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in 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/rfc6145.
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
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.
Li, et al. Standards Track [Page 1]
RFC 6145 IPv4/IPv6 Translation April 2011
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction and Motivation . . . . . . . . . . . . . . . . . 3
1.1. IPv4-IPv6 Translation Model . . . . . . . . . . . . . . . 3
1.2. Applicability and Limitations . . . . . . . . . . . . . . 3
1.3. Stateless vs. Stateful Mode . . . . . . . . . . . . . . . 4
1.4. Path MTU Discovery and Fragmentation . . . . . . . . . . . 5
2. Changes from RFC 2765 . . . . . . . . . . . . . . . . . . . . 5
3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Translating from IPv4 to IPv6 . . . . . . . . . . . . . . . . 6
4.1. Translating IPv4 Headers into IPv6 Headers . . . . . . . . 7
4.2. Translating ICMPv4 Headers into ICMPv6 Headers . . . . . . 10
4.3. Translating ICMPv4 Error Messages into ICMPv6 . . . . . . 13
4.4. Generation of ICMPv4 Error Message . . . . . . . . . . . . 14
4.5. Transport-Layer Header Translation . . . . . . . . . . . . 14
4.6. Knowing When to Translate . . . . . . . . . . . . . . . . 15
5. Translating from IPv6 to IPv4 . . . . . . . . . . . . . . . . 15
5.1. Translating IPv6 Headers into IPv4 Headers . . . . . . . . 17
5.1.1. IPv6 Fragment Processing . . . . . . . . . . . . . . . 19
5.2. Translating ICMPv6 Headers into ICMPv4 Headers . . . . . . 20
5.3. Translating ICMPv6 Error Messages into ICMPv4 . . . . . . 22
5.4. Generation of ICMPv6 Error Messages . . . . . . . . . . . 23
5.5. Transport-Layer Header Translation . . . . . . . . . . . . 24
5.6. Knowing When to Translate . . . . . . . . . . . . . . . . 24
6. Special Considerations for ICMPv6 Packet Too Big . . . . . . . 24
7. Security Considerations . . . . . . . . . . . . . . . . . . . 25
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 26
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.1. Normative References . . . . . . . . . . . . . . . . . . . 26
9.2. Informative References . . . . . . . . . . . . . . . . . . 28
Appendix A. Stateless Translation Workflow Example . . . . . . . 30
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