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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: 2000-Sep-13
Document File: 28 page(s) / 76K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Deering: AUTHOR [+2]

Abstract

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

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 4% 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.

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

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 ...