An Acceptable Use Policy for New ICMP Types and Codes
RFC 7279

Document Type RFC - Best Current Practice (May 2014; No errata)
Also known as BCP 189
Was draft-shore-icmp-aup (individual)
Last updated 2014-05-30
Stream IETF
Formats plain text pdf html
Stream WG state (None)
Consensus Unknown
Document shepherd Ron Bonica
Shepherd write-up Show (last changed 2013-10-07)
IESG IESG state RFC 7279 (Best Current Practice)
Telechat date
Responsible AD Benoit Claise
Send notices to rbonica@juniper.net, draft-shore-icmp-aup@ietf.org
IANA IANA review state Version Changed - Review Needed
IANA action state No IC
Internet Engineering Task Force (IETF)                          M. Shore
Request for Comments: 7279                          No Mountain Software
BCP: 189                                                    C. Pignataro
Category: Best Current Practice                      Cisco Systems, Inc.
ISSN: 2070-1721                                                 May 2014

         An Acceptable Use Policy for New ICMP Types and Codes

Abstract

   In this document we provide a basic description of ICMP's role in the
   IP stack and some guidelines for future use.

   This document is motivated by concerns about lack of clarity
   concerning when to add new Internet Control Message Protocol (ICMP)
   types and/or codes.  These concerns have highlighted a need to
   describe policies for when adding new features to ICMP is desirable
   and when it is not.

Status of This Memo

   This memo documents an Internet Best Current Practice.

   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
   BCPs 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/rfc7279.

Copyright Notice

   Copyright (c) 2014 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.

Shore & Pignataro         Best Current Practice                 [Page 1]
RFC 7279                        ICMP AUP                        May 2014

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Acceptable Use Policy . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Classification of Existing Message Types  . . . . . . . .   3
       2.1.1.  ICMP Use as a Routing Protocol  . . . . . . . . . . .   6
       2.1.2.  A Few Notes on RPL  . . . . . . . . . . . . . . . . .   6
     2.2.  Applications Using ICMP . . . . . . . . . . . . . . . . .   7
     2.3.  Extending ICMP  . . . . . . . . . . . . . . . . . . . . .   7
     2.4.  ICMPv4 vs. ICMPv6 . . . . . . . . . . . . . . . . . . . .   7
   3.  ICMP's Role in the Internet . . . . . . . . . . . . . . . . .   7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   5.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  Normative references  . . . . . . . . . . . . . . . . . .   8
     6.2.  Informative references  . . . . . . . . . . . . . . . . .   9

1.  Introduction

   There has been some recent concern expressed about a lack of clarity
   around when new message types and codes should be added to ICMP
   (including ICMPv4 [RFC0792] and ICMPv6 [RFC4443]).  We lay out a
   policy regarding when (and when not) to move functionality into ICMP.

   This document is the result of discussions among ICMP experts within
   the Operations and Management (OPS) area's IP Diagnostics Technical
   Interest Group [DIAGNOSTICS] and concerns expressed by the OPS area
   leadership.

   Note that this document does not supercede the "IANA Allocation
   Guidelines For Values In the Internet Protocol and Related Headers"
   [RFC2780], which specifies best practices and processes for the
   allocation of values in the IANA registries but does not describe the
   policies to be applied in the standards process.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.  Acceptable Use Policy

   In this document, we describe an acceptable use policy for new ICMP
   message types and codes, and provide some background about the
   policy.

Shore & Pignataro         Best Current Practice                 [Page 2]
RFC 7279                        ICMP AUP                        May 2014
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