Network Working Group A. Conta Request for Comments: 2463 Lucent Obsoletes: 1885 S. Deering Category: Standards Track Cisco Systems December 1998 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 (1998). All Rights Reserved. Abstract This document specifies a set of Internet Control Message Protocol (ICMP) messages for use with version 6 of the Internet Protocol (IPv6). Table of Contents 1. Introduction........................................2 2. ICMPv6 (ICMP for IPv6)..............................2 2.1 Message General Format.......................2 2.2 Message Source Address Determination.........3 2.3 Message Checksum Calculation.................4 2.4 Message Processing Rules.....................4 3. ICMPv6 Error Messages...............................6 3.1 Destination Unreachable Message..............6 3.2 Packet Too Big Message...................... 8 3.3 Time Exceeded Message....................... 9 3.4 Parameter Problem Message...................10 4. ICMPv6 Informational Messages......................11 4.1 Echo Request Message........................11 4.2 Echo Reply Message..........................12 5. Security Considerations............................13 6. References.........................................14 7. Acknowledgments....................................15 Conta & Deering Standards Track