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DNS Extensions to Support IPv6 Address Aggregation and Renumbering (RFC2874)

IP.com Disclosure Number: IPCOM000003475D
Original Publication Date: 2000-Jul-01
Included in the Prior Art Database: 2019-Feb-13
Document File: 20 page(s) / 28K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Crawford: AUTHOR [+1]

Related Documents

10.17487/RFC2874: DOI

Abstract

This document defines changes to the Domain Name System to support renumberable and aggregatable IPv6 addressing. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 8% of the total text.

Network Working Group M. Crawford Request for Comments: 2874 Fermilab Category: Standards Track C. Huitema Microsoft Corporation July 2000

DNS Extensions to Support IPv6 Address Aggregation and Renumbering

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 (2000). All Rights Reserved.

Abstract

This document defines changes to the Domain Name System to support renumberable and aggregatable IPv6 addressing. The changes include a new resource record type to store an IPv6 address in a manner which expedites network renumbering and updated definitions of existing query types that return Internet addresses as part of additional section processing.

For lookups keyed on IPv6 addresses (often called reverse lookups), this document defines a new zone structure which allows a zone to be used without modification for parallel copies of an address space (as for a multihomed provider or site) and across network renumbering events.

Crawford, et al. Standards Track [Page 1]

RFC 2874 IPv6 DNS July 2000

Table of Contents

1. Introduction ............................................... 2 2. Overview ................................................... 3 2.1. Name-to-Address Lookup ............................... 4 2.2. Underlying Mechanisms for Reverse Lookups ............ 4 2.2.1. Delegation on Arbitrary Boundaries ............. 4 2.2.2. Reusable Zones ................................. 5 3. Specifications ............................................. 5 3.1. The A6 Record Type ................................... 5 3.1.1. Format ......................................... 6 3.1.2. Processing ..................................... 6 3.1.3. Textual Representation ......................... 7 3.1.4. Name Resolution Procedure ...................... 7 3.2. Zone Structure for Reverse Lookups ................... 7 4. Modifications to Existing Query Types ...................... 8 5. Usage Illustrations ........................................ 8 5.1. A6 Record Chains ..................................... 9 5.1.1. Authoritative Data ............................. 9 5.1.2. Glue ........................................... 10 5.1.3. Variations ..................................... 12 5.2. Reverse Mapping Zones ................................ 13 5.2.1. The TLA level .................................. 13 5.2.2. The ISP level .................................. 13 5.2.3. The Site Level ................................. 13 5.3. Lookups .............................................. 14 5.4. Operational Note ..................................... 15 6. Transition from RFC 1886 and Deployment Notes .............. 15 6.1. Transition from AA...

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