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IETF RFC 6890
Last modified on Monday, April 29th, 2013
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Internet Engineering Task Force (IETF) M. Cotton
Request for Comments: 6890 L. Vegoda
BCP: 153 ICANN
Obsoletes: 4773, 5156, 5735, 5736 R. Bonica, Ed.
Category: Best Current Practice Juniper Networks
ISSN: 2070-1721 B. Haberman
JHU
April 2013
Special-Purpose IP Address Registries
 Abstract
This memo reiterates the assignment of an IPv4 address block
(192.0.0.0/24) to IANA. It also instructs IANA to restructure its
IPv4 and IPv6 Special-Purpose Address Registries. Upon
restructuring, the aforementioned registries will record all special-
purpose address blocks, maintaining a common set of information
regarding each address block.
This memo obsoletes RFCs 4773, 5156, 5735, and 5736.
Status of This Memo
This memo documents an Internet Best Current Practice.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
BCPs is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/RFC 6890.
Cotton, et al. Best Current Practice PAGE 1 
RFC 6890 Special-Purpose Address Registries April 2013
Copyright Notice
Copyright (c) 2013 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
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. IANA Considerations .............................................3
2.1. Assignment of an IPv4 Address Block to IANA ................3
2.2. Restructuring of the IPv4 and IPv6 Special-Purpose
Address ....................................................4
2.2.1. Information Requirements ............................4
2.2.2. IPv4 Special-Purpose Address Registry Entries .......6
2.2.3. IPv6 Special-Purpose Address Registry Entries ......14
3. Security Considerations ........................................20
4. Acknowledgements ...............................................20
5. Informative References .........................................20
1. Introduction
In order to support new protocols and practices, the IETF
occasionally reserves an address block for a special purpose. For
example, [RFC 1122] reserves an IPv4 address block (0.0.0.0/8) to
represent the local (i.e., "this") network. Likewise, [RFC 4291]
reserves an IPv6 address block (fe80::/10) to represent link-scoped
unicast addresses.
Periodically, the IETF publishes an RFC that catalogs special-purpose
address blocks. Currently, [RFC 5735] catalogs all IPv4 special-
purpose address blocks and [RFC 5156] catalogs all IPv6 special-
purpose address blocks.
[RFC 5736] assigns an IPv4 address block (192.0.0.0/24) to IANA and
instructs IANA to allocate special-purpose address blocks from this
space. [RFC 5736] also instructs IANA to create an IPv4 Special-
Purpose Address Registry that records allocations from this address
Cotton, et al. Best Current Practice PAGE 2
RFC 6890 Special-Purpose Address Registries April 2013
space. However, [RFC 5736] does not instruct IANA to record special-
purpose address block reservations from outside of the aforementioned
space in the IPv4 Special-Purpose Address Registry.
Likewise, [RFC 2928] assigns an IPv6 address block (2001:0000::/23) to
IANA and instructs IANA to allocate special-purpose address blocks
from this space. [RFC 4773] instructs IANA to create an IPv6 Special-
Purpose Address Registry that records allocations from this address
space. However, [RFC 4773] does not instruct IANA to record special-
purpose address block reservations from outside of the aforementioned
space in the IPv6 Special-Purpose Address Registry.
This memo reiterates the assignment of an IPv4 address block
(192.0.0.0/24) to IANA. It also instructs IANA to restructure its
IPv4 and IPv6 Special-Purpose Address Registries. Specifically, this
memo instructs IANA to record all special-purpose address blocks in
the aforementioned registries. These include, but are not limited
to, IPv4 allocations from 192.0.0.0/24 and IPv6 allocations from
2001:0000::/23. Furthermore, this memo defines:
o a common set of information that the registries will maintain
regarding each special-purpose address block
o a common set of requirements for future entries
When the aforementioned registries include all special-purpose
address blocks, [RFC 5735] and [RFC 5156] will become redundant with
the registries. Therefore, this memo obsoletes [RFC 5735] and
[RFC 5156]. Because this memo reiterates the assignment of
192.0.0.0/24 to IANA, and because it restructures the IPv4 Special-
Purpose Address Registry, it obsoletes [RFC 5736]. Finally, because
this memo restructures the IPv6 Special-Purpose Address Registry, it
obsoletes [RFC 4773].
2. IANA Considerations
2.1. 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
[RFC 2860].
IANA has designated special-purpose address blocks in compliance with
[RFC 2860].
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2.2. Restructuring of the IPv4 and IPv6 Special-Purpose Address
Registries
IANA has restructured the following registries:
o IPv4 Special-Purpose Address Registry
o 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.
Section 2.2.1 of this document describes information that both
registries will maintain for each entry. Initially, IANA has
populated the IPv4 Special-Purpose Address Registry with information
taken from Section 2.2.2 of this document. Likewise, IANA has
populated the IPv6 Special-Purpose Address Registry with information
taken from Section 2.2.3 of this document.
IANA will update the aforementioned registries as requested in the
"IANA Considerations" section of a document that has passed IETF
Review [RFC 5226]. The "IANA Considerations" section must include all
of the information specified in Section 2.2.1 of this document.
2.2.1. Information Requirements
The IPv4 and IPv6 Special-Purpose Address Registries maintain the
following information regarding each entry:
o Address Block - A block of IPv4 or IPv6 addresses that has been
registered for a special purpose.
o Name - A descriptive name for the special-purpose address block.
o RFC - The RFC through which the special-purpose address block was
requested.
o Allocation Date - The date upon which the special-purpose address
block was allocated.
o Termination Date - The date upon which the allocation is to be
terminated. This field is applicable for limited-use allocations
only.
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o 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.
o 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.
o 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.
o Global - 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.
o 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 "Global" must also be false.
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2.2.2. IPv4 Special-Purpose Address Registry Entries
Tables 1 though 16, 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 | [RFC 1122], Section 3.2.1.3 |
| Allocation Date | September 1981 |
| Termination Date | N/A |
| Source | True |
| Destination | False |
| Forwardable | False |
| Global | 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 | [RFC 1918] |
| Allocation Date | February 1996 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | 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 | [RFC 6598] |
| Allocation Date | April 2012 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------+
Table 3: Shared Address Space
+----------------------+----------------------------+
| Attribute | Value |
+----------------------+----------------------------+
| Address Block | 127.0.0.0/8 |
| Name | Loopback |
| RFC | [RFC 1122], Section 3.2.1.3 |
| Allocation Date | September 1981 |
| Termination Date | N/A |
| Source | False [1] |
| Destination | False [1] |
| Forwardable | False [1] |
| Global | False [1] |
| Reserved-by-Protocol | True |
+----------------------+----------------------------+
[1] Several protocols have been granted exceptions to this
rule. For examples, see [RFC 4379] and [RFC 5884].
Table 4: Loopback
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+----------------------+----------------+
| Attribute | Value |
+----------------------+----------------+
| Address Block | 169.254.0.0/16 |
| Name | Link Local |
| RFC | [RFC 3927] |
| Allocation Date | May 2005 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+----------------+
Table 5: Link Local
+----------------------+---------------+
| Attribute | Value |
+----------------------+---------------+
| Address Block | 172.16.0.0/12 |
| Name | Private-Use |
| RFC | [RFC 1918] |
| Allocation Date | February 1996 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+---------------+
Table 6: Private-Use Networks
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+---------------------------------+
| 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 |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+---------------------------------+
[2] Not usable unless by virtue of a more specific
reservation.
Table 7: IETF Protocol Assignments
+----------------------+--------------------------------+
| Attribute | Value |
+----------------------+--------------------------------+
| Address Block | 192.0.0.0/29 |
| Name | DS-Lite |
| RFC | [RFC 6333] |
| Allocation Date | June 2011 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+--------------------------------+
Table 8: DS-Lite
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+----------------------+----------------------------+
| Attribute | Value |
+----------------------+----------------------------+
| Address Block | 192.0.2.0/24 |
| Name | Documentation (TEST-NET-1) |
| RFC | [RFC 5737] |
| Allocation Date | January 2010 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------------+
Table 9: TEST-NET-1
+----------------------+--------------------+
| Attribute | Value |
+----------------------+--------------------+
| Address Block | 192.88.99.0/24 |
| Name | 6to4 Relay Anycast |
| RFC | [RFC 3068] |
| Allocation Date | June 2001 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | True |
| Reserved-by-Protocol | False |
+----------------------+--------------------+
Table 10: 6to4 Relay Anycast
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+----------------------+----------------+
| Attribute | Value |
+----------------------+----------------+
| Address Block | 192.168.0.0/16 |
| Name | Private-Use |
| RFC | [RFC 1918] |
| Allocation Date | February 1996 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------+
Table 11: Private-Use Networks
+----------------------+---------------+
| Attribute | Value |
+----------------------+---------------+
| Address Block | 198.18.0.0/15 |
| Name | Benchmarking |
| RFC | [RFC 2544] |
| Allocation Date | March 1999 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+---------------+
Table 12: Network Interconnect Device Benchmark Testing
Cotton, et al. Best Current Practice PAGE 11
RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+----------------------------+
| Attribute | Value |
+----------------------+----------------------------+
| Address Block | 198.51.100.0/24 |
| Name | Documentation (TEST-NET-2) |
| RFC | [RFC 5737] |
| Allocation Date | January 2010 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------------+
Table 13: TEST-NET-2
+----------------------+----------------------------+
| Attribute | Value |
+----------------------+----------------------------+
| Address Block | 203.0.113.0/24 |
| Name | Documentation (TEST-NET-3) |
| RFC | [RFC 5737] |
| Allocation Date | January 2010 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------------+
Table 14: TEST-NET-3
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+----------------------+
| Attribute | Value |
+----------------------+----------------------+
| Address Block | 240.0.0.0/4 |
| Name | Reserved |
| RFC | [RFC 1112], Section 4 |
| Allocation Date | August 1989 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+----------------------+
Table 15: Reserved for Future Use
+----------------------+----------------------+
| Attribute | Value |
+----------------------+----------------------+
| Address Block | 255.255.255.255/32 |
| Name | Limited Broadcast |
| RFC | [RFC 919], Section 7 |
| Allocation Date | October 1984 |
| Termination Date | N/A |
| Source | False |
| Destination | True |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------+
Table 16: Limited Broadcast
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RFC 6890 Special-Purpose Address Registries April 2013
2.2.3. IPv6 Special-Purpose Address Registry Entries
Tables 17 through 28, below, represent entries with which the IANA
has initially populated the IPv6 Special-Purpose Address Registry.
+----------------------+------------------+
| Attribute | Value |
+----------------------+------------------+
| Address Block | ::1/128 |
| Name | Loopback Address |
| RFC | [RFC 4291] |
| Allocation Date | February 2006 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+------------------+
Table 17: Loopback Address
+----------------------+---------------------+
| Attribute | Value |
+----------------------+---------------------+
| Address Block | ::/128 |
| Name | Unspecified Address |
| RFC | [RFC 4291] |
| Allocation Date | February 2006 |
| Termination Date | N/A |
| Source | True |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+---------------------+
Table 18: Unspecified Address
Cotton, et al. Best Current Practice PAGE 14
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+----------------------+---------------------+
| Attribute | Value |
+----------------------+---------------------+
| Address Block | 64:ff9b::/96 |
| Name | IPv4-IPv6 Translat. |
| RFC | [RFC 6052] |
| Allocation Date | October 2010 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | True |
| Reserved-by-Protocol | False |
+----------------------+---------------------+
Table 19: IPv4-IPv6 Translation Address
+----------------------+---------------------+
| Attribute | Value |
+----------------------+---------------------+
| Address Block | ::ffff:0:0/96 |
| Name | IPv4-mapped Address |
| RFC | [RFC 4291] |
| Allocation Date | February 2006 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+---------------------+
Table 20: IPv4-Mapped Address
Cotton, et al. Best Current Practice PAGE 15
RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+----------------------------+
| Attribute | Value |
+----------------------+----------------------------+
| Address Block | 100::/64 |
| Name | Discard-Only Address Block |
| RFC | [RFC 6666] |
| Allocation Date | June 2012 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------------------+
Table 21: Discard-Only Prefix
+----------------------+---------------------------+
| Attribute | Value |
+----------------------+---------------------------+
| Address Block | 2001::/23 |
| Name | IETF Protocol Assignments |
| RFC | [RFC 2928] |
| Allocation Date | September 2000 |
| Termination Date | N/A |
| Source | False[1] |
| Destination | False[1] |
| Forwardable | False[1] |
| Global | False[1] |
| Reserved-by-Protocol | False |
+----------------------+---------------------------+
[1] Unless allowed by a more specific allocation.
Table 22: IETF Protocol Assignments
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+----------------+
| Attribute | Value |
+----------------------+----------------+
| Address Block | 2001::/32 |
| Name | TEREDO |
| RFC | [RFC 4380] |
| Allocation Date | January 2006 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------+
Table 23: TEREDO
+----------------------+----------------+
| Attribute | Value |
+----------------------+----------------+
| Address Block | 2001:2::/48 |
| Name | Benchmarking |
| RFC | [RFC 5180] |
| Allocation Date | April 2008 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+----------------+
Table 24: Benchmarking
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+---------------+
| Attribute | Value |
+----------------------+---------------+
| Address Block | 2001:db8::/32 |
| Name | Documentation |
| RFC | [RFC 3849] |
| Allocation Date | July 2004 |
| Termination Date | N/A |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+---------------+
Table 25: Documentation
+----------------------+--------------+
| Attribute | Value |
+----------------------+--------------+
| Address Block | 2001:10::/28 |
| Name | ORCHID |
| RFC | [RFC 4843] |
| Allocation Date | March 2007 |
| Termination Date | March 2014 |
| Source | False |
| Destination | False |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+--------------+
Table 26: ORCHID
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+---------------+
| Attribute | Value |
+----------------------+---------------+
| Address Block | 2002::/16 [2] |
| Name | 6to4 |
| RFC | [RFC 3056] |
| Allocation Date | February 2001 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | N/A [2] |
| Reserved-by-Protocol | False |
+----------------------+---------------+
[2] See [RFC 3056] for details.
Table 27: 6to4
+----------------------+--------------+
| Attribute | Value |
+----------------------+--------------+
| Address Block | fc00::/7 |
| Name | Unique-Local |
| RFC | [RFC 4193] |
| Allocation Date | October 2005 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | True |
| Global | False |
| Reserved-by-Protocol | False |
+----------------------+--------------+
Table 28: Unique-Local
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RFC 6890 Special-Purpose Address Registries April 2013
+----------------------+-----------------------+
| Attribute | Value |
+----------------------+-----------------------+
| Address Block | fe80::/10 |
| Name | Linked-Scoped Unicast |
| RFC | [RFC 4291] |
| Allocation Date | February 2006 |
| Termination Date | N/A |
| Source | True |
| Destination | True |
| Forwardable | False |
| Global | False |
| Reserved-by-Protocol | True |
+----------------------+-----------------------+
Table 29: Linked-Scoped Unicast
3. 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.
4. Acknowledgements
The authors thank Geoff Huston and Randy Bush for their helpful
comments. The authors also express their gratitude to an anonymous
donor, without whom this document would not have been written.
5. Informative References
[RFC 919] Mogul, J., "Broadcasting Internet Datagrams", STD 5, RFC
919, October 1984.
Cotton, et al. Best Current Practice PAGE 20
RFC 6890 Special-Purpose Address Registries April 2013
[RFC 1112] Deering, S., "Host extensions for IP multicasting", STD 5,
RFC 1112, August 1989.
[RFC 1122] Braden, R., Ed., "Requirements for Internet Hosts -
Communication Layers", STD 3, RFC 1122, October 1989.
[RFC 1918] Rekhter, Y., Moskowitz, B., Karrenberg, D., de Groot, G.,
and E. Lear, "Address Allocation for Private Internets",
BCP 5, RFC 1918, February 1996.
[RFC 2544] Bradner, S. and J. McQuaid, "Benchmarking Methodology for
Network Interconnect Devices", RFC 2544, March 1999.
[RFC 2860] Carpenter, B., Baker, F., and M. Roberts, "Memorandum of
Understanding Concerning the Technical Work of the
Internet Assigned Numbers Authority", RFC 2860, June 2000.
[RFC 2928] Hinden, R., Deering, S., Fink, R., and T. Hain, "Initial
IPv6 Sub-TLA ID Assignments", RFC 2928, September 2000.
[RFC 3056] Carpenter, B. and K. Moore, "Connection of IPv6 Domains
via IPv4 Clouds", RFC 3056, February 2001.
[RFC 3068] Huitema, C., "An Anycast Prefix for 6to4 Relay Routers",
RFC 3068, June 2001.
[RFC 3849] Huston, G., Lord, A., and P. Smith, "IPv6 Address Prefix
Reserved for Documentation", RFC 3849, July 2004.
[RFC 3927] Cheshire, S., Aboba, B., and E. Guttman, "Dynamic
Configuration of IPv4 Link-Local Addresses", RFC 3927, May
2005.
[RFC 4193] Hinden, R. and B. Haberman, "Unique Local IPv6 Unicast
Addresses", RFC 4193, October 2005.
[RFC 4291] Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 4291, February 2006.
[RFC 4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol
Label Switched (MPLS) Data Plane Failures", RFC 4379,
February 2006.
[RFC 4380] Huitema, C., "Teredo: Tunneling IPv6 over UDP through
Network Address Translations (NATs)", RFC 4380, February
2006.
Cotton, et al. Best Current Practice PAGE 21
RFC 6890 Special-Purpose Address Registries April 2013
[RFC 4773] Huston, G., "Administration of the IANA Special Purpose
IPv6 Address Block", RFC 4773, December 2006.
[RFC 4843] Nikander, P., Laganier, J., and F. Dupont, "An IPv6 Prefix
for Overlay Routable Cryptographic Hash Identifiers
(ORCHID)", RFC 4843, April 2007.
[RFC 5156] Blanchet, M., "Special-Use IPv6 Addresses", RFC 5156,
April 2008.
[RFC 5180] Popoviciu, C., Hamza, A., Van de Velde, G., and D.
Dugatkin, "IPv6 Benchmarking Methodology for Network
Interconnect Devices", RFC 5180, May 2008.
[RFC 5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008.
[RFC 5735] Cotton, M. and L. Vegoda, "Special Use IPv4 Addresses",
RFC 5735, January 2010.
[RFC 5736] Huston, G., Cotton, M., and L. Vegoda, "IANA IPv4 Special
Purpose Address Registry", RFC 5736, January 2010.
[RFC 5737] Arkko, J., Cotton, M., and L. Vegoda, "IPv4 Address Blocks
Reserved for Documentation", RFC 5737, January 2010.
[RFC 5884] Aggarwal, R., Kompella, K., Nadeau, T., and G. Swallow,
"Bidirectional Forwarding Detection (BFD) for MPLS Label
Switched Paths (LSPs)", RFC 5884, June 2010.
[RFC 6052] Bao, C., Huitema, C., Bagnulo, M., Boucadair, M., and X.
Li, "IPv6 Addressing of IPv4/IPv6 Translators", RFC 6052,
October 2010.
[RFC 6333] Durand, A., Droms, R., Woodyatt, J., and Y. Lee, "Dual-
Stack Lite Broadband Deployments Following IPv4
Exhaustion", RFC 6333, August 2011.
[RFC 6598] Weil, J., Kuarsingh, V., Donley, C., Liljenstolpe, C., and
M. Azinger, "IANA-Reserved IPv4 Prefix for Shared Address
Space", BCP 153, RFC 6598, April 2012.
[RFC 6666] Hilliard, N. and D. Freedman, "A Discard Prefix for IPv6",
RFC 6666, August 2012.
Cotton, et al. Best Current Practice PAGE 22
RFC 6890 Special-Purpose Address Registries April 2013
Authors' Addresses
Michelle Cotton
Internet Corporation for Assigned Names and Numbers (ICANN)
12025 Waterfront Drive, Suite 300
Los Angeles, CA 90094-2536
USA
Phone: +310-823-9358
EMail: michelle.cotton@icann.org
URI: http://www.icann.org/
Leo Vegoda
Internet Corporation for Assigned Names and Numbers (ICANN)
12025 Waterfront Drive, Suite 300
Los Angeles, CA 90094-2536
USA
Phone: +310-823-9358
EMail: leo.vegoda@icann.org
URI: http://www.icann.org/
Ronald P Bonica (editor)
Juniper Networks
2251 Corporate Park Drive
Herndon, VA 20171
USA
EMail: rbonica@juniper.net
Brian Haberman
Johns Hopkins University (JHU) Applied Physics Lab
11100 Johns Hopkins Road
Laurel, MD 20723-6099
USA
EMail: brian@innovationslab.net
Cotton, et al. Best Current Practice PAGE 23
RFC TOTAL SIZE: 48317 bytes
PUBLICATION DATE: Monday, April 29th, 2013
LEGAL RIGHTS: The IETF Trust (see BCP 78)
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