Network Working Group             A. Conta, Digital Equipment Corporation
Request for Comments: 1885                         S. Deering, Xerox PARC
Category: Standards Track                                   December 1995




               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.


Abstract


   This document specifies a set of Internet Control Message Protocol
   (ICMP) messages for use with version 6 of the Internet Protocol
   (IPv6).  The Internet Group Management Protocol (IGMP) messages
   specified in STD 5, RFC 1112 have been merged into ICMP, for IPv6,
   and are included in this document.





















 
RFC 1885                 ICMPv6 (ICMP for IPv6)            December 1995


Table of Contents



   1. Introduction........................................3

   2. ICMPv6 (ICMP for IPv6)..............................3

         2.1 Message General Format.......................3

         2.2 Message Source Address Determination.........4

         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......................14

         4.1 Echo Request Message........................14

         4.2 Echo Reply Message..........................15

         4.3 Group Membership Messages...................17

   5. References.........................................19

   6. Acknowledgements...................................19