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Unique Local IPv6 Unicast Addresses (RFC4193)

IP.com Disclosure Number: IPCOM000129253D
Original Publication Date: 2005-Oct-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 16 page(s) / 24K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Hinden: AUTHOR [+1]

Related Documents

10.17487/RFC4193: DOI

Abstract

This document defines an IPv6 unicast address format that is globally unique and is intended for local communications, usually inside of a site. These addresses are not expected to be routable on the global Internet. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 10% of the total text.

Network Working Group R. Hinden Request for Comments: 4193 Nokia Category: Standards Track B. Haberman JHU-APL October 2005

Unique Local IPv6 Unicast Addresses

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 (2005).

Abstract

This document defines an IPv6 unicast address format that is globally unique and is intended for local communications, usually inside of a site. These addresses are not expected to be routable on the global Internet.

Table of Contents

1. Introduction ....................................................2 2. Acknowledgements ................................................3 3. Local IPv6 Unicast Addresses ....................................3 3.1. Format .....................................................3 3.1.1. Background ..........................................4 3.2. Global ID ..................................................4 3.2.1. Locally Assigned Global IDs .........................5 3.2.2. Sample Code for Pseudo-Random Global ID Algorithm ...5 3.2.3. Analysis of the Uniqueness of Global IDs ............6 3.3. Scope Definition ...........................................6 4. Operational Guidelines ..........................................7 4.1. Routing ....................................................7 4.2. Renumbering and Site Merging ...............................7 4.3. Site Border Router and Firewall Packet Filtering ...........8 4.4. DNS Issues .................................................8 4.5. Application and Higher Level Protocol Issues ...............9 4.6. Use of Local IPv6 Addresses for Local Communication ........9 4.7. Use of Local IPv6 Addresses with VPNs .....................10

Hinden & Haberman Standards Track [Page 1]

RFC 4193 Unique Local IPv6 Unicast Addresses October 2005

5. Global Routing Considerations ..................................11 5.1. From the Standpoint of the Internet .......................11 5.2. From the Standpoint of a Site .............................11 6. Advantages and Disadvantages ...................................12 6.1. Advantages ................................................12 6.2. Disadvantages .............................................13 7. Security Considerations ........................................13 8. IANA Considerations ............................................13 9. References .....................................................13 9.1. Normative References ......................................13 9.2. Informative References ....................................14

1. Introduction

This document defines an IPv6 unicast address format that is globally unique and is intended for local commun...

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