Proposed Changes to the Format of the IANA IPv6 Registry
RFC 4147

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 05

Network Working Group                                          G. Huston
Request for Comments: 4147                                         APNIC
Category: Informational                                      August 2005

        Proposed Changes to the Format of the IANA IPv6 Registry

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This document proposes a revised format for the IANA IPv6 address
   registries.  Rather than providing a formal definition of the format,
   it is described by giving examples of the (current as of preparation
   of this document) contents of the registries in the proposed format.
   The proposed format would bring the IANA IPv6 address registries into
   alignment with the current IPv6 Address Architecture specification,
   as well as update it to a more useful and generally accepted format.

1.  Introduction

   This document proposes a revised format for the IANA IPv6 address
   registries.  The proposed format would bring the IANA IPv6 address
   registries into alignment with the current IPv6 Address Architecture
   specification, as well as update it to a more useful and generally
   accepted format.

   The current (as of preparation of this document) IANA IPv6 registries
   [iana-ipv6-registry] [iana-ipv6-tla] are based on a now-deprecated
   address architecture that used the concept of Top Level Aggregation
   Identifiers (TLAs) and sub-TLAs.  The current IPv6 Address
   Architecture [RFC3513] uses the terminology of Global Identifiers
   instead of TLAs and sub-TLAs.

Huston                       Informational                      [Page 1]
RFC 4147                   IANA IPv6 Registry                August 2005

2.  IPv6 Address Registry

   The proposed format for the IPv6 address registry is indicated by
   example, using the registry state that is current as of preparation
   of this document, in Figure 1.  The registry explicitly notes which
   entity is placing a reservation on an address block and notes the
   defining RFC document for each allocation.

   The proposed format of the registry is a title line, the date of the
   last change to the registry, the registry in a tabular format, notes
   and references.

   The table uses 4 columns.  Within the table, the first column
   contains an IPv6 address prefix, using a hexadecimal notation of the
   address prefix and a prefix length.  There are no overlapping address
   blocks in the first column, and the set of address blocks in the
   registry spans the entire IPv6 address space.  The second column
   denotes the current disposition of the address block, using notation
   derived from the defining RFC document.  The third column contains a
   reference to the RFC that describes the current disposition of the
   address block.  The fourth column uses numeric footnote notation to
   reference any additional text associated with the address block.

   The notes in the registry may include a summary of previous
   disposition status values associated with an address block, as this
   summary is specifically not included in the registry table.  The
   notes are numbered sequentially.

   The reference section uses a conventional citation format.  The
   references include documents referenced in the registry table and
   documents referenced in the notes.

   -----------------------------------------------------

   INTERNET PROTOCOL VERSION 6 ADDRESS SPACE

   [last updated 13 January 2005]

     IPv6 Prefix           Allocation              Reference      Note
     -----------           ----------              ---------      ----
     0000::/8              Reserved by IETF        RFC3513        [1]
     0100::/8              Reserved by IETF        RFC3513
     0200::/7              Reserved by IETF        RFC4048        [2]
     0400::/6              Reserved by IETF        RFC3513
     0800::/5              Reserved by IETF        RFC3513
     1000::/4              Reserved by IETF        RFC3513
     2000::/3              Global Unicast          RFC3513        [3]
     4000::/3              Reserved by IETF        RFC3513

Huston                       Informational                      [Page 2]
RFC 4147                   IANA IPv6 Registry                August 2005

     6000::/3              Reserved by IETF        RFC3513
     8000::/3              Reserved by IETF        RFC3513
     A000::/3              Reserved by IETF        RFC3513
     C000::/3              Reserved by IETF        RFC3513
     E000::/4              Reserved by IETF        RFC3513
     F000::/5              Reserved by IETF        RFC3513
     F800::/6              Reserved by IETF        RFC3513
     FA00::/7              Reserved by IETF        RFC3513
     FC00::/7              Reserved by IETF        RFC3513