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DNS Extensions to Support IP Version 6 (RFC3596)

IP.com Disclosure Number: IPCOM000019882D
Original Publication Date: 2003-Oct-01
Included in the Prior Art Database: 2003-Oct-07
Document File: 9 page(s) / 14K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Thomson: AUTHOR [+4]

Abstract

This document defines the changes that need to be made to the Domain Name System (DNS) to support hosts running IP version 6 (IPv6). The changes include a resource record type to store an IPv6 address, a domain to support lookups based on an IPv6 address, and updated definitions of existing query types that return Internet addresses as part of additional section processing. The extensions are designed to be compatible with existing applications and, in particular, DNS implementations themselves.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 26% of the total text.

Network Working Group S. Thomson

Request for Comments: 3596 Cisco

Obsoletes: 3152, 1886 C. Huitema

Category: Standards Track Microsoft

V. Ksinant

6WIND

M. Souissi

AFNIC

October 2003

DNS Extensions to Support IP Version 6

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 (2003). All Rights Reserved.

Abstract

This document defines the changes that need to be made to the Domain

Name System (DNS) to support hosts running IP version 6 (IPv6). The

changes include a resource record type to store an IPv6 address, a

domain to support lookups based on an IPv6 address, and updated

definitions of existing query types that return Internet addresses as

part of additional section processing. The extensions are designed

to be compatible with existing applications and, in particular, DNS

implementations themselves.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. New resource record definition and domain. . . . . . . . . . . 2

2.1. AAAA record type . . . . . . . . . . . . . . . . . . . . 3

2.2. AAAA data format . . . . . . . . . . . . . . . . . . . . 3

2.3. AAAA query . . . . . . . . . . . . . . . . . . . . . . . 3

2.4. Textual format of AAAA records . . . . . . . . . . . . . 3

2.5. IP6.ARPA domain. . . . . . . . . . . . . . . . . . . . . 3

3. Modifications to existing query types. . . . . . . . . . . . . 4

4. Security Considerations. . . . . . . . . . . . . . . . . . . . 4

5. IANA Considerations. . . . . . . . . . . . . . . . . . . . . . 4

Thomson, et al. Standards Track [Page 1]

RFC 3596 DNS Extensions to Support IPv6 October 2003

6. Intellectual Property Statement. . . . . . . . . . . . . . . . 4

Acknowledgments. . . . . . . . . . . . . . . . . . . . . . . . . . 5

Appendix A: Changes from RFC 1886. . . . . . . . . . . . . . . . . 6

Normative References . . . . . . . . . . . . . . . . . . . . . . . 6

Informative References . . . . . . . . . . . . . . . . . . . . . . 6

Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 7

Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 8

1. Introduction

Current support for the storage of Internet addresses in the Domain

Name System (DNS) [1,2] cannot easily be extended to support IPv6

addresses [3] since applications assume that address queries return

32-bit IPv4 addresses only.

To support the storage of IPv6 addresses in the DNS, this document

defines the following extensions:

o A resource record type is defined to map a domain name to an

IPv6 address.

o A domain is defined to support lookups based on address.

o Existing queries that perform additional section processing to

locate IPv4 addresses are...