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IETF RFC 6814
Last modified on Thursday, November 29th, 2012
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Internet Engineering Task Force (IETF) C. Pignataro
Request for Comments: 6814 Cisco Systems
Obsoletes: 1385, 1393, 1475, 1770 F. Gont
Category: Standards Track UTN-FRH / SI6 Networks
ISSN: 2070-1721 November 2012
Formally Deprecating Some IPv4 Options
 Abstract
A number of IPv4 options have become obsolete in practice, but have
never been formally deprecated. This document deprecates such IPv4
options, thus cleaning up the corresponding IANA registry.
Additionally, it obsoletes RFCs 1385, 1393, 1475, and 1770, and
requests that the RFC Editor change their status to Historic.
Status of This Memo
This is an Internet Standards Track document.
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
Internet Standards 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 6814.
Copyright Notice
Copyright (c) 2012 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.
Pignataro & Gont Standards Track PAGE 1 
RFC 6814 Deprecating Some IPv4 Options November 2012
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Discussion of Deprecated Options . . . . . . . . . . . . . . . 2
2.1. Stream ID . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2. Extended Internet Protocol . . . . . . . . . . . . . . . . 3
2.3. Traceroute . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4. ENCODE . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.5. VISA . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.6. Address Extension . . . . . . . . . . . . . . . . . . . . . 3
2.7. Selective Directed Broadcast . . . . . . . . . . . . . . . 3
2.8. Dynamic Packet State . . . . . . . . . . . . . . . . . . . 3
2.9. Upstream Multicast Pkt. . . . . . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
4. Changing the Status of the Corresponding RFCs to Historic . . . 4
5. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 4
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1. Normative References . . . . . . . . . . . . . . . . . . . 5
7.2. Informative References . . . . . . . . . . . . . . . . . . 5
1. Introduction
The Internet Protocol version 4 (IPv4) [RFC 791] provides for
expansion of the protocol by supporting a number of "options" in the
variable-length IPv4 header. IPv4 options are identified by an
option "type" value, whose registration is managed by IANA [IANA-IP].
A number of IPv4 options have become obsolete in practice, but have
never been formally deprecated. This document deprecates such IPv4
options, thus cleaning up the corresponding IANA registry.
This document also obsoletes [RFC 1385], [RFC 1393], [RFC 1475], and
[RFC 1770], and requests that the RFC Editor change their status to
Historic.
2. Discussion of Deprecated Options
The following subsections discuss the options being deprecated. No
other reference information has been found.
2.1. Stream ID
The Stream ID option is obsolete. It is specified in RFC 791
[RFC 791], and is deprecated in Section 3.2.1.8 of RFC 1122 [RFC 1122]
and Section 4.2.2.1 of RFC 1812 [RFC 1812].
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RFC 6814 Deprecating Some IPv4 Options November 2012
2.2. Extended Internet Protocol
The Extended Internet Protocol option is defined in [RFC 1385] and is
superseded by [RFC 2460].
2.3. Traceroute
The Traceroute option is defined in [RFC 1393]. The Traceroute option
is defined as Experimental; it was never widely deployed on the
public Internet.
2.4. ENCODE
This option was used for experimentation around IP-layer encryption.
No products are known to ever have shipped with support for this
option.
2.5. VISA
This option was part of an experiment [VISA87] [VISA89] at USC and
was never widely deployed.
2.6. Address Extension
The Address Extension option is defined in an Experimental RFC
[RFC 1475] and marked as IPv7. IPv7 was never widely deployed.
2.7. Selective Directed Broadcast
The Selective Directed Broadcast option was originally defined in
[RFC 1770]. This option was never widely deployed and the approach
was abandoned.
2.8. Dynamic Packet State
The Dynamic Packet State option was specified in [DIFFSERV-DPS]. The
aforementioned document was meant to be published as Experimental,
but it never became an RFC. The IP option was never widely deployed.
2.9. Upstream Multicast Pkt.
This option was originally specified in [BIDIR-PIM]. Its use was
deprecated by [RFC 5015], which employs a control-plane mechanism to
solve the problem of doing upstream forwarding of multicast packets
on a multi-access LAN.
Pignataro & Gont Standards Track PAGE 3
RFC 6814 Deprecating Some IPv4 Options November 2012
3. IANA Considerations
The "IP OPTION NUMBERS" registry [IANA-IP] contains the list of
currently assigned IP option numbers. This registry also denotes a
deprecated IP Option Number by marking it with a footnote.
This document formally deprecates the following options. IANA has
marked them as such in the corresponding registry [IANA-IP].
Copy Class Number Value Name Reference
---- ----- ------ ----- ------------------------------- ------------
1 0 8 136 SID - Stream ID [RFC 791,JBP]
1 0 14 142 VISA - Experimental Access Control [Estrin]
0 0 15 15 ENCODE - ??? [VerSteeg]
1 0 17 145 EIP - Extended Internet Protocol [RFC 1385]
0 2 18 82 TR - Traceroute [RFC 1393]
1 0 19 147 ADDEXT - Address Extension [Ullmann IPv7]
1 0 21 149 SDB - Selective Directed Broadcast [Graff]
1 0 23 151 DPS - Dynamic Packet State [Malis]
1 0 24 152 UMP - Upstream Multicast Pkt. [Farinacci]
The IP options "MTU Probe" (MTUP, value 11) and "MTU Reply" (MTUR,
value 12) were initially defined in [RFC 1063] and have already been
deprecated by [RFC 1191].
4. Changing the Status of the Corresponding RFCs to Historic
Per this document, the RFC Editor has changed the status of
[RFC 1385], [RFC 1393], [RFC 1475], and [RFC 1770] to Historic.
5. Security Considerations
This document does not modify the security properties of the IPv4
options being deprecated.
6. Acknowledgments
The authors would like to thank Ron Bonica for his guidance.
The authors would like to thank Ran Atkinson, Fred Baker, Deborah
Estrin, Dino Farinacci, Andrew Malis, Gene Tsudik, and Bill VerSteeg
for providing insights on some of the options being formally
deprecated by this document.
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RFC 6814 Deprecating Some IPv4 Options November 2012
7. References
7.1. Normative References
[RFC 791] Postel, J., "Internet Protocol", STD 5, RFC 791, September
1981.
[RFC 1122] Braden, R., Ed., "Requirements for Internet Hosts -
Communication Layers", STD 3, RFC 1122, October 1989.
7.2. Informative References
[BIDIR-PIM] Estrin, D. and D. Farinacci, "Bi-Directional Shared Trees
in PIM-SM", Work in Progress, May 1999.
[DIFFSERV-DPS]
Stoica, I., Zhang, H., Venkitaraman, N., and J. Mysore,
"Per Hop Behaviors Based on Dynamic Packet State", Work in
Progress, October 2002.
[IANA-IP] Internet Assigned Numbers Authority, "IP OPTION NUMBERS",
<http://www.iana.org/assignments/ip-parameters>.
[RFC 1063] Mogul, J., Kent, C., Partridge, C., and K. McCloghrie, "IP
MTU discovery options", RFC 1063, July 1988.
[RFC 1191] Mogul, J. and S. Deering, "Path MTU discovery", RFC 1191,
November 1990.
[RFC 1385] Wang, Z., "EIP: The Extended Internet Protocol", RFC 1385,
November 1992.
[RFC 1393] Malkin, G., "Traceroute Using an IP Option", RFC 1393,
January 1993.
[RFC 1475] Ullmann, R., "TP/IX: The Next Internet", RFC 1475, June
1993.
[RFC 1770] Graff, C., "IPv4 Option for Sender Directed Multi-
Destination Delivery", RFC 1770, March 1995.
[RFC 1812] Baker, F., Ed., "Requirements for IP Version 4 Routers",
RFC 1812, June 1995.
[RFC 2460] Deering, S. and R. Hinden, "Internet Protocol, Version 6
(IPv6) Specification", RFC 2460, December 1998.
Pignataro & Gont Standards Track PAGE 5
RFC 6814 Deprecating Some IPv4 Options November 2012
[RFC 5015] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
"Bidirectional Protocol Independent Multicast (BIDIR-
PIM)", RFC 5015, October 2007.
[VISA87] Estrin, D. and G. Tsudik, "VISA Scheme for Inter-
Organizational Network Security", IEEE Symposium on
Security and Privacy (S&P), 1987.
[VISA89] Estrin, D., Mogul, J., and G. Tsudik, "VISA Protocols for
Controlling Inter-Organizational Datagram Flow", IEEE
Journal on Selected Areas in Communications, 1989.
Authors' Addresses
Carlos Pignataro
Cisco Systems
7200-12 Kit Creek Road
Research Triangle Park, NC 27709
United States
EMail: cpignata@cisco.com
Fernando Gont
UTN-FRH / SI6 Networks
Evaristo Carriego 2644
Haedo, Provincia de Buenos Aires 1706
Argentina
Phone: +54 11 4650 8472
EMail: fgont@si6networks.com
URI: http://www.si6networks.com
Pignataro & Gont Standards Track PAGE 6
RFC TOTAL SIZE: 11327 bytes
PUBLICATION DATE: Thursday, November 29th, 2012
LEGAL RIGHTS: The IETF Trust (see BCP 78)
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