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Versions: (RFC 6890) 00 01 02 03 04 05 06 07 RFC 8190

Network Working Group                                          R. Bonica
Internet-Draft                                          Juniper Networks
Obsoletes: 6890 (if approved)                                  M. Cotton
Intended status: Best Current Practice                             ICANN
Expires: August 10, 2017                                     B. Haberman
                                                Johns Hopkins University
                                                               L. Vegoda
                                                                   ICANN
                                                        February 6, 2017


                 Special-Purpose IP Address Registries
                        draft-bchv-rfc6890bis-03

Abstract

   This memo updates the IANA IPv6 Special-Purpose Address Registries to
   address issues raised by the definition of a global prefix.  For
   completeness, this memo contains all the assignments made by RFC 6890
   to the IANA Special-Purpose Address Registries.

   This memo obsoletes RFC 6890.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 10, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of



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   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Assignment of an IPv4 Address Block to IANA . . . . . . .   3
     3.2.  Restructuring of the IPv4 and IPv6 Special-Purpose
           Address Registries  . . . . . . . . . . . . . . . . . . .   3
       3.2.1.  Information Requirements  . . . . . . . . . . . . . .   4
       3.2.2.  IPv4 Special-Purpose Address Registry Entries . . . .   5
       3.2.3.  IPv6 Special-Purpose Address Registry Entries . . . .  15
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  25
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  25
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  26
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  26
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  26
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  29

1.  Introduction

   In order to support new protocols and practices, the IETF
   occasionally reserves an address block for a special purpose.  For
   example, [RFC1122] reserves an IPv4 address block (0.0.0.0/8) to
   represent the local (i.e., "this") network.  Likewise, [RFC4291]
   reserves an IPv6 address block (fe80::/10) to represent link-scoped
   unicast addresses.

   Several issues have been raised with the documentation of some of the
   special-purpose address blocks in [RFC6890].  Specifically, the
   definition of global provided in [RFC6890] was misleading as it
   slightly differed from the generally accepted definition of "global
   scope" (i.e., the ability to forward beyond the boundaries of an
   administrative domain, described as "global unicast" in the IPv6
   addressing architecture [RFC4291]).

   This memo reiterates the assignments made to the IPv4 and IPv6
   Special-Purpose Address Registries and augments the fields contained
   within the registries in order to address the confusion raised by the
   definition of "global".

   This memo obsoletes [RFC6890].



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2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

3.  IANA Considerations

3.1.  Assignment of an IPv4 Address Block to IANA

   Table 7 of this document records the assignment of an IPv4 address
   block (192.0.0.0/24) to IANA for IETF protocol assignments.  This
   address allocation to IANA is intended to support IETF protocol
   assignments.  A more general view of the roles of IANA with respect
   to address allocation functions is documented in Sections 4.1 and 4.3
   [RFC2860].

   IANA has designated special-purpose address blocks in compliance with
   [RFC2860].

3.2.  Restructuring of the IPv4 and IPv6 Special-Purpose Address
      Registries

   IANA has restructured the following registries:

      IPv4 Special-Purpose Address Registry

      IPv6 Special-Purpose Address Registry

   The IPv4 Special-Purpose Address Registry records all IPv4 special-
   purpose address blocks.  These reservations include, but are not
   limited to, allocations from the 192.0.0.0/24 address block.
   Likewise, the IPv6 Special-Purpose Address Registry records all IPv6
   special-purpose address blocks.  These reservations include, but are
   not limited to, allocations from the 2001:0000::/23 address block,
   which is a globally scoped address block.

   Section 3.2.1 of this document describes information that both
   registries will maintain for each entry.  IANA has populated the IPv4
   Special-Purpose Address Registry with information taken from
   Section 3.2.2 of this document.  Likewise, IANA has populated the
   IPv6 Special-Purpose Address Registry with information taken from
   Section 3.2.3 of this document.

   IANA will update the aforementioned registries as requested in the
   "IANA Considerations" section of a document that has passed IETF
   Review [RFC5226].  The "IANA Considerations" section MUST include all
   of the information specified in Section 3.2.1 of this document.



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3.2.1.  Information Requirements

   The IPv4 and IPv6 Special-Purpose Address Registries maintain the
   following information regarding each entry:

      Address Block - A block of IPv4 or IPv6 addresses that has been
      registered for a special purpose.

      Name - A descriptive name for the special-purpose address block.

      RFC - The RFC through which the special-purpose address block was
      requested.

      Allocation Date - The date upon which the special-purpose address
      block was allocated.

      Termination Date - The date upon which the allocation is to be
      terminated.  This field is applicable for limited-use allocations
      only.

      Source - A boolean value indicating whether an address from the
      allocated special-purpose address block is valid when used as the
      source address of an IP datagram that transits two devices.

      Destination - A boolean value indicating whether an address from
      the allocated special-purpose address block is valid when used as
      the destination address of an IP datagram that transits two
      devices.

      Forwardable - A boolean value indicating whether a router may
      forward an IP datagram whose destination address is drawn from the
      allocated special-purpose address block between external
      interfaces (i.e., different administrative domains).

      Globally Reachable - A boolean value indicating whether an IP
      datagram whose destination address is drawn from the allocated
      special-purpose address block is forwardable beyond a specified
      administrative domain.

      Reserved-by-Protocol - A boolean value indicating whether the
      special-purpose address block is reserved by IP, itself.  This
      value is "TRUE" if the RFC that created the special-purpose
      address block requires all compliant IP implementations to behave
      in a special way when processing packets either to or from
      addresses contained by the address block.

   If the value of "Destination" is FALSE, the values of "Forwardable"
   and "Globally Reachable" must also be FALSE.



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3.2.2.  IPv4 Special-Purpose Address Registry Entries

   Table 1 through Table 22, below, represent entries with which IANA
   has initially populated the IPv4 Special-Purpose Address Registry.

          +----------------------+-----------------------------+
          | Attribute            | Value                       |
          +----------------------+-----------------------------+
          | Address Block        | 0.0.0.0/8                   |
          | Name                 | "This host on this network" |
          | RFC                  | [RFC1122], Section 3.2.1.3  |
          | Allocation Date      | September 1981              |
          | Termination Date     | N/A                         |
          | Source               | True                        |
          | Destination          | False                       |
          | Forwardable          | False                       |
          | Globally Reachable   | False                       |
          | Reserved-by-Protocol | True                        |
          +----------------------+-----------------------------+

                    Table 1: This host on this network

                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 10.0.0.0/8    |
                 | Name                 | Private-Use   |
                 | RFC                  | [RFC1918]     |
                 | Allocation Date      | February 1996 |
                 | Termination Date     | N/A           |
                 | Source               | True          |
                 | Destination          | True          |
                 | Forwardable          | True          |
                 | Globally Reachable   | False         |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

                       Table 2: Private-Use Networks













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              +----------------------+----------------------+
              | Attribute            | Value                |
              +----------------------+----------------------+
              | Address Block        | 100.64.0.0/10        |
              | Name                 | Shared Address Space |
              | RFC                  | [RFC6598]            |
              | Allocation Date      | April 2012           |
              | Termination Date     | N/A                  |
              | Source               | True                 |
              | Destination          | True                 |
              | Forwardable          | True                 |
              | Globally Reachable   | False                |
              | Reserved-by-Protocol | False                |
              +----------------------+----------------------+

                       Table 3: Shared Address Space

           +----------------------+----------------------------+
           | Attribute            | Value                      |
           +----------------------+----------------------------+
           | Address Block        | 127.0.0.0/8                |
           | Name                 | Loopback                   |
           | RFC                  | [RFC1122], Section 3.2.1.3 |
           | Allocation Date      | September 1981             |
           | Termination Date     | N/A                        |
           | Source               | False [1]                  |
           | Destination          | False [1]                  |
           | Forwardable          | False [1]                  |
           | Globally Reachable   | False [1]                  |
           | Reserved-by-Protocol | True                       |
           +----------------------+----------------------------+

                             Table 4: Loopback

   [1] Several protocols have been granted exceptions to this rule.  For
   examples, see [RFC4379] and [RFC5884].















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                 +----------------------+----------------+
                 | Attribute            | Value          |
                 +----------------------+----------------+
                 | Address Block        | 169.254.0.0/16 |
                 | Name                 | Link Local     |
                 | RFC                  | [RFC3927]      |
                 | Allocation Date      | May 2005       |
                 | Termination Date     | N/A            |
                 | Source               | True           |
                 | Destination          | True           |
                 | Forwardable          | False          |
                 | Globally Reachable   | False          |
                 | Reserved-by-Protocol | True           |
                 +----------------------+----------------+

                            Table 5: Link Local

                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 172.16.0.0/12 |
                 | Name                 | Private-Use   |
                 | RFC                  | [RFC1918]     |
                 | Allocation Date      | February 1996 |
                 | Termination Date     | N/A           |
                 | Source               | True          |
                 | Destination          | True          |
                 | Forwardable          | True          |
                 | Globally Reachable   | False         |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

                       Table 6: Private-Use Networks


















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          +----------------------+------------------------------+
          | Attribute            | Value                        |
          +----------------------+------------------------------+
          | Address Block        | 192.0.0.0/24 [2]             |
          | Name                 | IETF Protocol Assignments    |
          | RFC                  | Section 2.1 of this document |
          | Allocation Date      | January 2010                 |
          | Termination Date     | N/A                          |
          | Source               | False                        |
          | Destination          | False                        |
          | Forwardable          | False                        |
          | Globally Reachable   | False                        |
          | Reserved-by-Protocol | False                        |
          +----------------------+------------------------------+

                    Table 7: IETF Protocol Assignments

   [2] Not usable unless by virtue of a more specific reservation.

         +----------------------+--------------------------------+
         | Attribute            | Value                          |
         +----------------------+--------------------------------+
         | Address Block        | 192.0.0.0/29                   |
         | Name                 | IPv4 Service Continuity Prefix |
         | RFC                  | [RFC7335]                      |
         | Allocation Date      | June 2011                      |
         | Termination Date     | N/A                            |
         | Source               | True                           |
         | Destination          | True                           |
         | Forwardable          | True                           |
         | Globally Reachable   | False                          |
         | Reserved-by-Protocol | False                          |
         +----------------------+--------------------------------+

                     Table 8: IPv4 Service Continuity
















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               +----------------------+--------------------+
               | Attribute            | Value              |
               +----------------------+--------------------+
               | Address Block        | 192.0.0.8/32       |
               | Name                 | IPv4 dummy address |
               | RFC                  | [RFC7600]          |
               | Allocation Date      | March 2015         |
               | Termination Date     | N/A                |
               | Source               | True               |
               | Destination          | False              |
               | Forwardable          | False              |
               | Globally Reachable   | False              |
               | Reserved-by-Protocol | False              |
               +----------------------+--------------------+

                        Table 9: IPv4 Dummy Address

         +----------------------+-------------------------------+
         | Attribute            | Value                         |
         +----------------------+-------------------------------+
         | Address Block        | 192.0.0.9/32                  |
         | Name                 | Port Control Protocol Anycast |
         | RFC                  | [RFC7723]                     |
         | Allocation Date      | October 2015                  |
         | Termination Date     | N/A                           |
         | Source               | True                          |
         | Destination          | True                          |
         | Forwardable          | True                          |
         | Globally Reachable   | True                          |
         | Reserved-by-Protocol | False                         |
         +----------------------+-------------------------------+

                           Table 10: PCP Anycast


















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         +----------------------+--------------------------------+
         | Attribute            | Value                          |
         +----------------------+--------------------------------+
         | Address Block        | 192.0.0.170/32, 192.0.0.171/32 |
         | Name                 | NAT64/DNS64 Discovery          |
         | RFC                  | [RFC7050]                      |
         | Allocation Date      | February 2013                  |
         | Termination Date     | N/A                            |
         | Source               | False                          |
         | Destination          | False                          |
         | Forwardable          | False                          |
         | Globally Reachable   | False                          |
         | Reserved-by-Protocol | True                           |
         +----------------------+--------------------------------+

                      Table 11: NAT64/DNS64 Discovery

           +----------------------+----------------------------+
           | Attribute            | Value                      |
           +----------------------+----------------------------+
           | Address Block        | 192.0.2.0/24               |
           | Name                 | Documentation (TEST-NET-1) |
           | RFC                  | [RFC5737]                  |
           | Allocation Date      | January 2010               |
           | Termination Date     | N/A                        |
           | Source               | False                      |
           | Destination          | False                      |
           | Forwardable          | False                      |
           | Globally Reachable   | False                      |
           | Reserved-by-Protocol | False                      |
           +----------------------+----------------------------+

                           Table 12: TEST-NET-1


















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                +----------------------+-----------------+
                | Attribute            | Value           |
                +----------------------+-----------------+
                | Address Block        | 192.31.196.0/24 |
                | Name                 | AS112-v4        |
                | RFC                  | [RFC7535]       |
                | Allocation Date      | December 2014   |
                | Termination Date     | N/A             |
                | Source               | True            |
                | Destination          | True            |
                | Forwardable          | True            |
                | Globally Reachable   | True            |
                | Reserved-by-Protocol | False           |
                +----------------------+-----------------+

                          Table 13: AS112 - IPv4

                +----------------------+-----------------+
                | Attribute            | Value           |
                +----------------------+-----------------+
                | Address Block        | 192.52.193.0/24 |
                | Name                 | AMT             |
                | RFC                  | [RFC7450]       |
                | Allocation Date      | December 2014   |
                | Termination Date     | N/A             |
                | Source               | True            |
                | Destination          | True            |
                | Forwardable          | True            |
                | Globally Reachable   | True            |
                | Reserved-by-Protocol | False           |
                +----------------------+-----------------+

                  Table 14: Automatic Multicast Tunneling


















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         +----------------------+-------------------------------+
         | Attribute            | Value                         |
         +----------------------+-------------------------------+
         | Address Block        | 192.88.99.0/24                |
         | Name                 | Deprecated 6to4 Relay Anycast |
         | RFC                  | [RFC7526]                     |
         | Allocation Date      | June 2001                     |
         | Termination Date     | March 2015                    |
         | Source               | N/A                           |
         | Destination          | N/A                           |
         | Forwardable          | N/A                           |
         | Globally Reachable   | N/A                           |
         | Reserved-by-Protocol | N/A                           |
         +----------------------+-------------------------------+

                       Table 15: 6to4 Relay Anycast

                 +----------------------+----------------+
                 | Attribute            | Value          |
                 +----------------------+----------------+
                 | Address Block        | 192.168.0.0/16 |
                 | Name                 | Private-Use    |
                 | RFC                  | [RFC1918]      |
                 | Allocation Date      | February 1996  |
                 | Termination Date     | N/A            |
                 | Source               | True           |
                 | Destination          | True           |
                 | Forwardable          | True           |
                 | Globally Reachable   | False          |
                 | Reserved-by-Protocol | False          |
                 +----------------------+----------------+

                      Table 16: Private-Use Networks


















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                +----------------------+-----------------+
                | Attribute            | Value           |
                +----------------------+-----------------+
                | Address Block        | 192.175.48.0/24 |
                | Name                 | Private-Use     |
                | RFC                  | [RFC7534]       |
                | Allocation Date      | January 1996    |
                | Termination Date     | N/A             |
                | Source               | True            |
                | Destination          | True            |
                | Forwardable          | True            |
                | Globally Reachable   | True            |
                | Reserved-by-Protocol | False           |
                +----------------------+-----------------+

                 Table 17: Direct Delegation AS112 Service

                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 198.18.0.0/15 |
                 | Name                 | Benchmarking  |
                 | RFC                  | [RFC2544]     |
                 | Allocation Date      | March 1999    |
                 | Termination Date     | N/A           |
                 | Source               | True          |
                 | Destination          | True          |
                 | Forwardable          | True          |
                 | Globally Reachable   | False         |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

          Table 18: Network Interconnect Device Benchmark Testing


















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           +----------------------+----------------------------+
           | Attribute            | Value                      |
           +----------------------+----------------------------+
           | Address Block        | 198.51.100.0/24            |
           | Name                 | Documentation (TEST-NET-2) |
           | RFC                  | [RFC5737]                  |
           | Allocation Date      | January 2010               |
           | Termination Date     | N/A                        |
           | Source               | False                      |
           | Destination          | False                      |
           | Forwardable          | False                      |
           | Globally Reachable   | False                      |
           | Reserved-by-Protocol | False                      |
           +----------------------+----------------------------+

                           Table 19: TEST-NET-2

           +----------------------+----------------------------+
           | Attribute            | Value                      |
           +----------------------+----------------------------+
           | Address Block        | 203.0.113.0/24             |
           | Name                 | Documentation (TEST-NET-3) |
           | RFC                  | [RFC5737]                  |
           | Allocation Date      | January 2010               |
           | Termination Date     | N/A                        |
           | Source               | False                      |
           | Destination          | False                      |
           | Forwardable          | False                      |
           | Globally Reachable   | False                      |
           | Reserved-by-Protocol | False                      |
           +----------------------+----------------------------+

                           Table 20: TEST-NET-3


















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              +----------------------+----------------------+
              | Attribute            | Value                |
              +----------------------+----------------------+
              | Address Block        | 240.0.0.0/4          |
              | Name                 | Reserved             |
              | RFC                  | [RFC1112], Section 4 |
              | Allocation Date      | August 1989          |
              | Termination Date     | N/A                  |
              | Source               | False                |
              | Destination          | False                |
              | Forwardable          | False                |
              | Globally Reachable   | False                |
              | Reserved-by-Protocol | True                 |
              +----------------------+----------------------+

                     Table 21: Reserved for Future Use

              +----------------------+----------------------+
              | Attribute            | Value                |
              +----------------------+----------------------+
              | Address Block        | 255.255.255.255/32   |
              | Name                 | Limited Broadcast    |
              | RFC                  | [RFC0919], Section 7 |
              | Allocation Date      | October 1984         |
              | Termination Date     | N/A                  |
              | Source               | False                |
              | Destination          | True                 |
              | Forwardable          | False                |
              | Globally Reachable   | False                |
              | Reserved-by-Protocol | True                 |
              +----------------------+----------------------+

                        Table 22: Limited Broadcast

3.2.3.  IPv6 Special-Purpose Address Registry Entries

   Table 23 through Table 41, below, represent entries with which the
   IANA has initially populated the IPv6 Special-Purpose Address
   Registry.












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                +----------------------+------------------+
                | Attribute            | Value            |
                +----------------------+------------------+
                | Address Block        | ::1/128          |
                | Name                 | Loopback Address |
                | RFC                  | [RFC4291]        |
                | Allocation Date      | February 2006    |
                | Termination Date     | N/A              |
                | Source               | False            |
                | Destination          | False            |
                | Forwardable          | False            |
                | Globally Reachable   | False            |
                | Reserved-by-Protocol | True             |
                +----------------------+------------------+

                        Table 23: Loopback Address

              +----------------------+---------------------+
              | Attribute            | Value               |
              +----------------------+---------------------+
              | Address Block        | ::/128              |
              | Name                 | Unspecified Address |
              | RFC                  | [RFC4291]           |
              | Allocation Date      | February 2006       |
              | Termination Date     | N/A                 |
              | Source               | True                |
              | Destination          | False               |
              | Forwardable          | False               |
              | Globally Reachable   | False               |
              | Reserved-by-Protocol | True                |
              +----------------------+---------------------+

                       Table 24: Unspecified Address


















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              +----------------------+---------------------+
              | Attribute            | Value               |
              +----------------------+---------------------+
              | Address Block        | ::ffff:0:0/96       |
              | Name                 | IPv4-mapped Address |
              | RFC                  | [RFC4291]           |
              | Allocation Date      | February 2006       |
              | Termination Date     | N/A                 |
              | Source               | False               |
              | Destination          | False               |
              | Forwardable          | False               |
              | Globally Reachable   | False               |
              | Reserved-by-Protocol | True                |
              +----------------------+---------------------+

                       Table 25: IPv4-Mapped Address

              +----------------------+---------------------+
              | Attribute            | Value               |
              +----------------------+---------------------+
              | Address Block        | 64:ff9b::/96        |
              | Name                 | IPv4-IPv6 Translat. |
              | RFC                  | [RFC6052]           |
              | Allocation Date      | October 2010        |
              | Termination Date     | N/A                 |
              | Source               | True                |
              | Destination          | True                |
              | Forwardable          | True                |
              | Globally Reachable   | True                |
              | Reserved-by-Protocol | False               |
              +----------------------+---------------------+

                  Table 26: IPv4-IPv6 Translation Address


















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           +----------------------+----------------------------+
           | Attribute            | Value                      |
           +----------------------+----------------------------+
           | Address Block        | 100::/64                   |
           | Name                 | Discard-Only Address Block |
           | RFC                  | [RFC6666]                  |
           | Allocation Date      | June 2012                  |
           | Termination Date     | N/A                        |
           | Source               | True                       |
           | Destination          | True                       |
           | Forwardable          | True                       |
           | Globally Reachable   | False                      |
           | Reserved-by-Protocol | False                      |
           +----------------------+----------------------------+

                       Table 27: Discard-Only Prefix

           +----------------------+---------------------------+
           | Attribute            | Value                     |
           +----------------------+---------------------------+
           | Address Block        | 2001::/23                 |
           | Name                 | IETF Protocol Assignments |
           | RFC                  | [RFC2928]                 |
           | Allocation Date      | September 2000            |
           | Termination Date     | N/A                       |
           | Source               | False[1]                  |
           | Destination          | False[1]                  |
           | Forwardable          | False[1]                  |
           | Globally Reachable   | False[1]                  |
           | Reserved-by-Protocol | False                     |
           +----------------------+---------------------------+

                    Table 28: IETF Protocol Assignments

   [1] Unless allowed by a more specific allocation.
















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                  +----------------------+--------------+
                  | Attribute            | Value        |
                  +----------------------+--------------+
                  | Address Block        | 2001::/32    |
                  | Name                 | TEREDO       |
                  | RFC                  | [RFC4380]    |
                  | Allocation Date      | January 2006 |
                  | Termination Date     | N/A          |
                  | Source               | True         |
                  | Destination          | True         |
                  | Forwardable          | True         |
                  | Globally Reachable   | N/A [2]      |
                  | Reserved-by-Protocol | False        |
                  +----------------------+--------------+

                             Table 29: TEREDO

   [2] See [RFC4380] for details.

         +----------------------+-------------------------------+
         | Attribute            | Value                         |
         +----------------------+-------------------------------+
         | Address Block        | 2001:1::1/128                 |
         | Name                 | Port Control Protocol Anycast |
         | RFC                  | [RFC7723]                     |
         | Allocation Date      | November 2015                 |
         | Termination Date     | N/A                           |
         | Source               | True                          |
         | Destination          | True                          |
         | Forwardable          | True                          |
         | Globally Reachable   | True                          |
         | Reserved-by-Protocol | False                         |
         +----------------------+-------------------------------+

                  Table 30: Port Control Protocol Anycast
















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                  +----------------------+--------------+
                  | Attribute            | Value        |
                  +----------------------+--------------+
                  | Address Block        | 2001:2::/48  |
                  | Name                 | Benchmarking |
                  | RFC                  | [RFC5180]    |
                  | Allocation Date      | April 2008   |
                  | Termination Date     | N/A          |
                  | Source               | True         |
                  | Destination          | True         |
                  | Forwardable          | True         |
                  | Globally Reachable   | False        |
                  | Reserved-by-Protocol | False        |
                  +----------------------+--------------+

                          Table 31: Benchmarking

                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 2001:3::/32   |
                 | Name                 | AMT           |
                 | RFC                  | [RFC7450]     |
                 | Allocation Date      | December 2014 |
                 | Termination Date     | N/A           |
                 | Source               | True          |
                 | Destination          | True          |
                 | Forwardable          | True          |
                 | Globally Reachable   | True          |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

                  Table 32: Automatic Multicast Tunneling


















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                +----------------------+-----------------+
                | Attribute            | Value           |
                +----------------------+-----------------+
                | Address Block        | 2001:4:112::/48 |
                | Name                 | AS112-v6        |
                | RFC                  | [RFC7535]       |
                | Allocation Date      | December 2014   |
                | Termination Date     | N/A             |
                | Source               | True            |
                | Destination          | True            |
                | Forwardable          | True            |
                | Globally Reachable   | True            |
                | Reserved-by-Protocol | False           |
                +----------------------+-----------------+

                          Table 33: AS112 - IPv6

    +----------------------+------------------------------------------+
    | Attribute            | Value                                    |
    +----------------------+------------------------------------------+
    | Address Block        | 2001:5::/32                              |
    | Name                 | EID Space for LISP (Managed by RIPE NCC) |
    | RFC                  | [RFC7954]                                |
    | Allocation Date      | September 2016                           |
    | Termination Date     | September 2019[3]                        |
    | Source               | True[4]                                  |
    | Destination          | True                                     |
    | Forwardable          | True                                     |
    | Globally Reachable   | True                                     |
    | Reserved-by-Protocol | True[5]                                  |
    +----------------------+------------------------------------------+

                        Table 34: EID Space - LISP

   [3] According to the 3+3 Plan outlined in [RFC7954], the termination
   date can be postponed to September 2022.

   [4] Can be used as a multicast source as well.

   [5] To be used as EID space by routers enabled by LISP [RFC6830].











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         +----------------------+--------------------------------+
         | Attribute            | Value                          |
         +----------------------+--------------------------------+
         | Address Block        | 2001:10::/28                   |
         | Name                 | Deprecated (previously ORCHID) |
         | RFC                  | [RFC4843]                      |
         | Allocation Date      | March 2007                     |
         | Termination Date     | March 2014                     |
         | Source               |                                |
         | Destination          |                                |
         | Forwardable          |                                |
         | Globally Reachable   |                                |
         | Reserved-by-Protocol |                                |
         +----------------------+--------------------------------+

                      Table 35: ORCHIDv1 - Deprecated

                  +----------------------+--------------+
                  | Attribute            | Value        |
                  +----------------------+--------------+
                  | Address Block        | 2001:20::/28 |
                  | Name                 | ORCHIDv2     |
                  | RFC                  | [RFC7343]    |
                  | Allocation Date      | July 2014    |
                  | Termination Date     | N/A          |
                  | Source               | True         |
                  | Destination          | True         |
                  | Forwardable          | True         |
                  | Globally Reachable   | True         |
                  | Reserved-by-Protocol | False        |
                  +----------------------+--------------+

                            Table 36: ORCHIDv2


















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                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 2001:db8::/32 |
                 | Name                 | Documentation |
                 | RFC                  | [RFC3849]     |
                 | Allocation Date      | July 2004     |
                 | Termination Date     | N/A           |
                 | Source               | False         |
                 | Destination          | False         |
                 | Forwardable          | False         |
                 | Globally Reachable   | False         |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

                          Table 37: Documentation

                 +----------------------+---------------+
                 | Attribute            | Value         |
                 +----------------------+---------------+
                 | Address Block        | 2002::/16 [2] |
                 | Name                 | 6to4          |
                 | RFC                  | [RFC3056]     |
                 | Allocation Date      | February 2001 |
                 | Termination Date     | N/A           |
                 | Source               | True          |
                 | Destination          | True          |
                 | Forwardable          | True          |
                 | Globally Reachable   | N/A [6]       |
                 | Reserved-by-Protocol | False         |
                 +----------------------+---------------+

                              Table 38: 6to4

   [6] See [RFC3056] for details.
















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        +----------------------+---------------------------------+
        | Attribute            | Value                           |
        +----------------------+---------------------------------+
        | Address Block        | 2620:4f:8000::/48               |
        | Name                 | Direct Delegation AS112 Service |
        | RFC                  | [RFC7534]                       |
        | Allocation Date      | May 2011                        |
        | Termination Date     | N/A                             |
        | Source               | True                            |
        | Destination          | True                            |
        | Forwardable          | True                            |
        | Globally Reachable   | True                            |
        | Reserved-by-Protocol | False                           |
        +----------------------+---------------------------------+

                 Table 39: Direct Delegation AS112 Service

                  +----------------------+--------------+
                  | Attribute            | Value        |
                  +----------------------+--------------+
                  | Address Block        | fc00::/7     |
                  | Name                 | Unique-Local |
                  | RFC                  | [RFC4193]    |
                  | Allocation Date      | October 2005 |
                  | Termination Date     | N/A          |
                  | Source               | True         |
                  | Destination          | True         |
                  | Forwardable          | True         |
                  | Globally Reachable   | False [7]    |
                  | Reserved-by-Protocol | False        |
                  +----------------------+--------------+

                     Table 40: Unique-Local (Private)

   [7] See [RFC4193] for more details on the routability of Unique-Local
   addresses.  The Unique-Local prefix is drawn from the IPv6 Global
   Unicast Address range, but is specified as not globally routed.














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             +----------------------+-----------------------+
             | Attribute            | Value                 |
             +----------------------+-----------------------+
             | Address Block        | fe80::/10             |
             | Name                 | Linked-Scoped Unicast |
             | RFC                  | [RFC4291]             |
             | Allocation Date      | February 2006         |
             | Termination Date     | N/A                   |
             | Source               | True                  |
             | Destination          | True                  |
             | Forwardable          | False                 |
             | Globally Reachable   | False                 |
             | Reserved-by-Protocol | True                  |
             +----------------------+-----------------------+

                       Table 41: Link-Scoped Unicast

4.  Security Considerations

   Security of the Internet's routing system relies on the ability to
   authenticate an assertion of unique control of an address block.
   Measures to authenticate such assertions rely on validation that the
   address block forms part of an existing allocated address block and
   that there is a trustable and unique reference in the IANA address
   registries.

   The proposed registry is intended to provide an authoritative source
   of information regarding the currency and intended purpose of special
   purpose address blocks that are designated from the IANA-administered
   Special-Purpose registry.  This is a small step towards the creation
   of a comprehensive registry framework that can be used as a trust
   point for commencing a chain of address validation.  Consideration
   should be given to IANA registry publication formats that are machine
   parsable.  Additionally, consideration should be given to the use of
   file signatures and associated certificate mechanisms to allow
   applications to confirm that the registry contents are current and
   that they have been published by the IANA.

5.  Acknowledgements

   Brian Carpenter and C.M.  Heard provided useful comments on initial
   versions of this document.  Daniel Migualt provided an in-depth
   review that helped strengthen the text within the document.








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6.  References

6.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <http://www.rfc-editor.org/info/rfc2119>.

6.2.  Informative References

   [RFC0919]  Mogul, J., "Broadcasting Internet Datagrams", STD 5,
              RFC 919, DOI 10.17487/RFC0919, October 1984,
              <http://www.rfc-editor.org/info/rfc919>.

   [RFC1112]  Deering, S., "Host extensions for IP multicasting", STD 5,
              RFC 1112, DOI 10.17487/RFC1112, August 1989,
              <http://www.rfc-editor.org/info/rfc1112>.

   [RFC1122]  Braden, R., Ed., "Requirements for Internet Hosts -
              Communication Layers", STD 3, RFC 1122,
              DOI 10.17487/RFC1122, October 1989,
              <http://www.rfc-editor.org/info/rfc1122>.

   [RFC1918]  Rekhter, Y., Moskowitz, B., Karrenberg, D., de Groot, G.,
              and E. Lear, "Address Allocation for Private Internets",
              BCP 5, RFC 1918, DOI 10.17487/RFC1918, February 1996,
              <http://www.rfc-editor.org/info/rfc1918>.

   [RFC2544]  Bradner, S. and J. McQuaid, "Benchmarking Methodology for
              Network Interconnect Devices", RFC 2544,
              DOI 10.17487/RFC2544, March 1999,
              <http://www.rfc-editor.org/info/rfc2544>.

   [RFC2860]  Carpenter, B., Baker, F., and M. Roberts, "Memorandum of
              Understanding Concerning the Technical Work of the
              Internet Assigned Numbers Authority", RFC 2860,
              DOI 10.17487/RFC2860, June 2000,
              <http://www.rfc-editor.org/info/rfc2860>.

   [RFC2928]  Hinden, R., Deering, S., Fink, R., and T. Hain, "Initial
              IPv6 Sub-TLA ID Assignments", RFC 2928,
              DOI 10.17487/RFC2928, September 2000,
              <http://www.rfc-editor.org/info/rfc2928>.

   [RFC3056]  Carpenter, B. and K. Moore, "Connection of IPv6 Domains
              via IPv4 Clouds", RFC 3056, DOI 10.17487/RFC3056, February
              2001, <http://www.rfc-editor.org/info/rfc3056>.



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   [RFC3849]  Huston, G., Lord, A., and P. Smith, "IPv6 Address Prefix
              Reserved for Documentation", RFC 3849,
              DOI 10.17487/RFC3849, July 2004,
              <http://www.rfc-editor.org/info/rfc3849>.

   [RFC3927]  Cheshire, S., Aboba, B., and E. Guttman, "Dynamic
              Configuration of IPv4 Link-Local Addresses", RFC 3927,
              DOI 10.17487/RFC3927, May 2005,
              <http://www.rfc-editor.org/info/rfc3927>.

   [RFC4193]  Hinden, R. and B. Haberman, "Unique Local IPv6 Unicast
              Addresses", RFC 4193, DOI 10.17487/RFC4193, October 2005,
              <http://www.rfc-editor.org/info/rfc4193>.

   [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
              Architecture", RFC 4291, DOI 10.17487/RFC4291, February
              2006, <http://www.rfc-editor.org/info/rfc4291>.

   [RFC4379]  Kompella, K. and G. Swallow, "Detecting Multi-Protocol
              Label Switched (MPLS) Data Plane Failures", RFC 4379,
              DOI 10.17487/RFC4379, February 2006,
              <http://www.rfc-editor.org/info/rfc4379>.

   [RFC4380]  Huitema, C., "Teredo: Tunneling IPv6 over UDP through
              Network Address Translations (NATs)", RFC 4380,
              DOI 10.17487/RFC4380, February 2006,
              <http://www.rfc-editor.org/info/rfc4380>.

   [RFC4843]  Nikander, P., Laganier, J., and F. Dupont, "An IPv6 Prefix
              for Overlay Routable Cryptographic Hash Identifiers
              (ORCHID)", RFC 4843, DOI 10.17487/RFC4843, April 2007,
              <http://www.rfc-editor.org/info/rfc4843>.

   [RFC5180]  Popoviciu, C., Hamza, A., Van de Velde, G., and D.
              Dugatkin, "IPv6 Benchmarking Methodology for Network
              Interconnect Devices", RFC 5180, DOI 10.17487/RFC5180, May
              2008, <http://www.rfc-editor.org/info/rfc5180>.

   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 5226,
              DOI 10.17487/RFC5226, May 2008,
              <http://www.rfc-editor.org/info/rfc5226>.

   [RFC5737]  Arkko, J., Cotton, M., and L. Vegoda, "IPv4 Address Blocks
              Reserved for Documentation", RFC 5737,
              DOI 10.17487/RFC5737, January 2010,
              <http://www.rfc-editor.org/info/rfc5737>.




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   [RFC5884]  Aggarwal, R., Kompella, K., Nadeau, T., and G. Swallow,
              "Bidirectional Forwarding Detection (BFD) for MPLS Label
              Switched Paths (LSPs)", RFC 5884, DOI 10.17487/RFC5884,
              June 2010, <http://www.rfc-editor.org/info/rfc5884>.

   [RFC6052]  Bao, C., Huitema, C., Bagnulo, M., Boucadair, M., and X.
              Li, "IPv6 Addressing of IPv4/IPv6 Translators", RFC 6052,
              DOI 10.17487/RFC6052, October 2010,
              <http://www.rfc-editor.org/info/rfc6052>.

   [RFC6598]  Weil, J., Kuarsingh, V., Donley, C., Liljenstolpe, C., and
              M. Azinger, "IANA-Reserved IPv4 Prefix for Shared Address
              Space", BCP 153, RFC 6598, DOI 10.17487/RFC6598, April
              2012, <http://www.rfc-editor.org/info/rfc6598>.

   [RFC6666]  Hilliard, N. and D. Freedman, "A Discard Prefix for IPv6",
              RFC 6666, DOI 10.17487/RFC6666, August 2012,
              <http://www.rfc-editor.org/info/rfc6666>.

   [RFC6830]  Farinacci, D., Fuller, V., Meyer, D., and D. Lewis, "The
              Locator/ID Separation Protocol (LISP)", RFC 6830,
              DOI 10.17487/RFC6830, January 2013,
              <http://www.rfc-editor.org/info/rfc6830>.

   [RFC6890]  Cotton, M., Vegoda, L., Bonica, R., Ed., and B. Haberman,
              "Special-Purpose IP Address Registries", BCP 153,
              RFC 6890, DOI 10.17487/RFC6890, April 2013,
              <http://www.rfc-editor.org/info/rfc6890>.

   [RFC7050]  Savolainen, T., Korhonen, J., and D. Wing, "Discovery of
              the IPv6 Prefix Used for IPv6 Address Synthesis",
              RFC 7050, DOI 10.17487/RFC7050, November 2013,
              <http://www.rfc-editor.org/info/rfc7050>.

   [RFC7335]  Byrne, C., "IPv4 Service Continuity Prefix", RFC 7335,
              DOI 10.17487/RFC7335, August 2014,
              <http://www.rfc-editor.org/info/rfc7335>.

   [RFC7343]  Laganier, J. and F. Dupont, "An IPv6 Prefix for Overlay
              Routable Cryptographic Hash Identifiers Version 2
              (ORCHIDv2)", RFC 7343, DOI 10.17487/RFC7343, September
              2014, <http://www.rfc-editor.org/info/rfc7343>.

   [RFC7450]  Bumgardner, G., "Automatic Multicast Tunneling", RFC 7450,
              DOI 10.17487/RFC7450, February 2015,
              <http://www.rfc-editor.org/info/rfc7450>.





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   [RFC7526]  Troan, O. and B. Carpenter, Ed., "Deprecating the Anycast
              Prefix for 6to4 Relay Routers", BCP 196, RFC 7526,
              DOI 10.17487/RFC7526, May 2015,
              <http://www.rfc-editor.org/info/rfc7526>.

   [RFC7534]  Abley, J. and W. Sotomayor, "AS112 Nameserver Operations",
              RFC 7534, DOI 10.17487/RFC7534, May 2015,
              <http://www.rfc-editor.org/info/rfc7534>.

   [RFC7535]  Abley, J., Dickson, B., Kumari, W., and G. Michaelson,
              "AS112 Redirection Using DNAME", RFC 7535,
              DOI 10.17487/RFC7535, May 2015,
              <http://www.rfc-editor.org/info/rfc7535>.

   [RFC7600]  Despres, R., Jiang, S., Ed., Penno, R., Lee, Y., Chen, G.,
              and M. Chen, "IPv4 Residual Deployment via IPv6 - A
              Stateless Solution (4rd)", RFC 7600, DOI 10.17487/RFC7600,
              July 2015, <http://www.rfc-editor.org/info/rfc7600>.

   [RFC7723]  Kiesel, S. and R. Penno, "Port Control Protocol (PCP)
              Anycast Addresses", RFC 7723, DOI 10.17487/RFC7723,
              January 2016, <http://www.rfc-editor.org/info/rfc7723>.

   [RFC7954]  Iannone, L., Lewis, D., Meyer, D., and V. Fuller,
              "Locator/ID Separation Protocol (LISP) Endpoint Identifier
              (EID) Block", RFC 7954, DOI 10.17487/RFC7954, September
              2016, <http://www.rfc-editor.org/info/rfc7954>.

Authors' Addresses

   Ronald Bonica
   Juniper Networks

   Email: rbonica@juniper.net


   Michelle Cotton
   ICANN

   Email: michelle.cotton@icann.org


   Brian Haberman
   Johns Hopkins University

   Email: brian@innovationslab.net





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   Leo Vegoda
   ICANN

   Email: leo.vegoda@icann.org















































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