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Internet Protocol, Version 6 (IPv6) Specification (RFC1883)

IP.com Disclosure Number: IPCOM000004139D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 37 page(s) / 43K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Deering: AUTHOR [+1]

Related Documents

10.17487/RFC1883: DOI

Abstract

This document specifies version 6 of the Internet Protocol (IPv6), also sometimes referred to as IP Next Generation or IPng. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 5% of the total text.

Network Working Group S. Deering, Xerox PARC Request for Comments: 1883 R. Hinden, Ipsilon Networks Category: Standards Track December 1995

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 version 6 of the Internet Protocol (IPv6), also sometimes referred to as IP Next Generation or IPng.

Deering & Hinden Standards Track [Page 1]

RFC 1883 IPv6 Specification December 1995

Table of Contents

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

2. Terminology...................................................4

3. IPv6 Header Format............................................5

4. IPv6 Extension Headers........................................6 4.1 Extension Header Order...................................8 4.2 Options..................................................9 4.3 Hop-by-Hop Options Header...............................11 4.4 Routing Header..........................................13 4.5 Fragment Header.........................................19 4.6 Destination Options Header..............................24 4.7 No Next Header..........................................25

5. Packet Size Issues...........................................26

6. Flow Labels..................................................28

7. Priority.....................................................30

8. Upper-Layer Protocol Issues..................................31 8.1 Upper-Layer Checksums...................................31 8.2 Maximum Packet Lifetime.................................32 8.3 Maximum Upper-Layer Payload Size........................32

Appendix A. Formatting Guidelines for Options...................33

Security Considerations.........................................36

Acknowledgments.................................................36

Authors’ Addresses..............................................36

References......................................................37

Deering & Hinden Standards Track [Page 2]

RFC 1883 IPv6 Specification December 1995

1. Introduction

IP version 6 (IPv6) is a new version of the Internet Protocol, designed as a successor to IP version 4 (IPv4) [RFC-791]. The changes from IPv4 to IPv6 fall primarily into the following categories:

o Expanded Addressing Capabilities

IPv6 increases the IP address size from 32 bits to 128 bits, to support more levels of addressing hierarchy, a much greater number of addressable nodes, and simpler auto-configuration of addresses. The scalability of multicast routing is improved by adding a "scope" field to multicast addresses. And a new type of address called an "anycast address" is defined, used to send a pac...

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