rfc2460-IPv6 specification.pdfVIP

Network Working Group S. Deering Request for Comments: 2460 Cisco Obsoletes: 1883 R. Hinden Category: Standards Track Nokia December 1998 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 version 6 of the Internet Protocol (IPv6), also sometimes referred to as IP Next Generation or IPng. Table of Contents 1. Introduction2 2. Terminology3 3. IPv6 Header Format4 4. IPv6 Extension Headers6 4.1 Extension Header Order7 4.2 Options9 4.3 Hop-by-Hop Options Header11 4.4 Routing Header12 4.5 Fragment Header18 4.6 Destination Options Header23 4.7 No Next Header24 5. Packet Size Issues24 6. Flow Labels25 7. Traffic Classes25 8. Upper-Layer Protocol Issues27 8.1 Upper-Layer Checksums27 8.2 Maximum Packet Lifetime28 8.3 Maximum Upper-Layer Payload Size28 8.4 Responding to Packets Carrying Routing Headers29 Deering Hinden Standards Track [Page 1] RFC 2460 IPv6 Specification December 1998 Appendix A. Semantics and Usage of the Flow Label Field30 Appendix B. Formatting G