Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
RFC 4443
Document | Type |
RFC - Internet Standard
(March 2006; Errata)
Updated by RFC 4884
Obsoletes RFC 2463
Updates RFC 2780
Status changed by status-change-icmpv6-dns-ipv6-to-internet-standard
Also known as STD 89
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Authors | Mukesh Gupta , Alex Conta | ||
Last updated | 2017-07-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4443 (Internet Standard) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Margaret Cullen | ||
Send notices to | <margaret@thingmagic.com> |
Network Working Group A. Conta Request for Comments: 4443 Transwitch Obsoletes: 2463 S. Deering Updates: 2780 Cisco Systems Category: Standards Track M. Gupta, Ed. Tropos Networks March 2006 Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2006). Abstract This document describes the format of a set of control messages used in ICMPv6 (Internet Control Message Protocol). ICMPv6 is the Internet Control Message Protocol for Internet Protocol version 6 (IPv6). Conta, et al. Standards Track [Page 1] RFC 4443 ICMPv6 (ICMP for IPv6) March 2006 Table of Contents 1. Introduction ....................................................2 2. ICMPv6 (ICMP for IPv6) ..........................................3 2.1. Message General Format .....................................3 2.2. Message Source Address Determination .......................5 2.3. Message Checksum Calculation ...............................5 2.4. Message Processing Rules ...................................5 3. ICMPv6 Error Messages ...........................................8 3.1. Destination Unreachable Message ............................8 3.2. Packet Too Big Message ....................................10 3.3. Time Exceeded Message .....................................11 3.4. Parameter Problem Message .................................12 4. ICMPv6 Informational Messages ..................................13 4.1. Echo Request Message ......................................13 4.2. Echo Reply Message ........................................14 5. Security Considerations ........................................15 5.1. Authentication and Confidentiality of ICMP Messages .......15 5.2. ICMP Attacks ..............................................16 6. IANA Considerations ............................................17 6.1. Procedure for New ICMPV6 Type and Code Value Assignments ..17 6.2. Assignments for This Document .............................18 7. References .....................................................19 7.1. Normative References ......................................19 7.2. Informative References ....................................19 8. Acknowledgements ...............................................20 Appendix A - Changes since RFC 2463................................21 1. Introduction The Internet Protocol version 6 (IPv6) uses the Internet Control Message Protocol (ICMP) as defined for IPv4 [RFC-792], with a number of changes. The resulting protocol is called ICMPv6 and has an IPv6 Next Header value of 58. This document describes the format of a set of control messages used in ICMPv6. It does not describe the procedures for using these messages to achieve functions like Path MTU discovery; these procedures are described in other documents (e.g., [PMTU]). Other documents may also introduce additional ICMPv6 message types, such as Neighbor Discovery messages [IPv6-DISC], subject to the general rules for ICMPv6 messages given in Section 2 of this document. Terminology defined in the IPv6 specification [IPv6] and the IPv6 Routing and Addressing specification [IPv6-ADDR] applies to this document as well. Conta, et al. Standards Track [Page 2] RFC 4443 ICMPv6 (ICMP for IPv6) March 2006 This document obsoletes RFC 2463 [RFC-2463] and updates RFC 2780 [RFC-2780]. 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 [RFC-2119]. 2. ICMPv6 (ICMP for IPv6) ICMPv6 is used by IPv6 nodes to report errors encountered in processing packets, and to perform other internet-layer functions, such as diagnostics (ICMPv6 "ping"). ICMPv6 is an integral part of IPv6, and the base protocol (all the messages and behavior required by this specification) MUST be fully implemented by every IPv6 node.Show full document text