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 7. Security Considerations............................19 Authors' Addresses....................................20 Conta & Deering Standards Track