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<pre>Internet Engineering Task Force (IETF) C. Pignataro
Request for Comments: 6814 Cisco Systems
Obsoletes: <a href="./rfc1385">1385</a>, <a href="./rfc1393">1393</a>, <a href="./rfc1475">1475</a>, <a href="./rfc1770">1770</a> F. Gont
Category: Standards Track UTN-FRH / SI6 Networks
ISSN: 2070-1721 November 2012
<span class="h1">Formally Deprecating Some IPv4 Options</span>
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 <a href="./rfc5741#section-2">Section 2 of RFC 5741</a>.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
<a href="http://www.rfc-editor.org/info/rfc6814">http://www.rfc-editor.org/info/rfc6814</a>.
Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a> and the IETF Trust's Legal
Provisions Relating to IETF Documents
(<a href="http://trustee.ietf.org/license-info">http://trustee.ietf.org/license-info</a>) 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.
<span class="grey">Pignataro & Gont Standards Track [Page 1]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-2" ></span>
<span class="grey"><a href="./rfc6814">RFC 6814</a> Deprecating Some IPv4 Options November 2012</span>
Table of Contents
<a href="#section-1">1</a>. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-2">2</a>
<a href="#section-2">2</a>. Discussion of Deprecated Options . . . . . . . . . . . . . . . <a href="#page-2">2</a>
<a href="#section-2.1">2.1</a>. Stream ID . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-2">2</a>
<a href="#section-2.2">2.2</a>. Extended Internet Protocol . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.3">2.3</a>. Traceroute . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.4">2.4</a>. ENCODE . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.5">2.5</a>. VISA . . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.6">2.6</a>. Address Extension . . . . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.7">2.7</a>. Selective Directed Broadcast . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.8">2.8</a>. Dynamic Packet State . . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-2.9">2.9</a>. Upstream Multicast Pkt. . . . . . . . . . . . . . . . . . . <a href="#page-3">3</a>
<a href="#section-3">3</a>. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . <a href="#page-4">4</a>
<a href="#section-4">4</a>. Changing the Status of the Corresponding RFCs to Historic . . . <a href="#page-4">4</a>
<a href="#section-5">5</a>. Security Considerations . . . . . . . . . . . . . . . . . . . . <a href="#page-4">4</a>
<a href="#section-6">6</a>. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-4">4</a>
<a href="#section-7">7</a>. References . . . . . . . . . . . . . . . . . . . . . . . . . . <a href="#page-5">5</a>
<a href="#section-7.1">7.1</a>. Normative References . . . . . . . . . . . . . . . . . . . <a href="#page-5">5</a>
<a href="#section-7.2">7.2</a>. Informative References . . . . . . . . . . . . . . . . . . <a href="#page-5">5</a>
<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>. Introduction</span>
The Internet Protocol version 4 (IPv4) [<a href="./rfc791" title=""Internet Protocol"">RFC791</a>] 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 [<a href="#ref-IANA-IP" title=""IP OPTION NUMBERS"">IANA-IP</a>].
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 [<a href="./rfc1385" title=""EIP: The Extended Internet Protocol"">RFC1385</a>], [<a href="./rfc1393" title=""Traceroute Using an IP Option"">RFC1393</a>], [<a href="./rfc1475" title=""TP/IX: The Next Internet"">RFC1475</a>], and
[<a href="./rfc1770" title=""IPv4 Option for Sender Directed Multi- Destination Delivery"">RFC1770</a>], and requests that the RFC Editor change their status to
Historic.
<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>. Discussion of Deprecated Options</span>
The following subsections discuss the options being deprecated. No
other reference information has been found.
<span class="h3"><a class="selflink" id="section-2.1" href="#section-2.1">2.1</a>. Stream ID</span>
The Stream ID option is obsolete. It is specified in <a href="./rfc791">RFC 791</a>
[<a href="./rfc791" title=""Internet Protocol"">RFC791</a>], and is deprecated in <a href="./rfc1122#section-3.2.1.8">Section 3.2.1.8 of RFC 1122</a> [<a href="./rfc1122" title=""Requirements for Internet Hosts - Communication Layers"">RFC1122</a>]
and <a href="./rfc1812#section-4.2.2.1">Section 4.2.2.1 of RFC 1812</a> [<a href="./rfc1812" title=""Requirements for IP Version 4 Routers"">RFC1812</a>].
<span class="grey">Pignataro & Gont Standards Track [Page 2]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-3" ></span>
<span class="grey"><a href="./rfc6814">RFC 6814</a> Deprecating Some IPv4 Options November 2012</span>
<span class="h3"><a class="selflink" id="section-2.2" href="#section-2.2">2.2</a>. Extended Internet Protocol</span>
The Extended Internet Protocol option is defined in [<a href="./rfc1385" title=""EIP: The Extended Internet Protocol"">RFC1385</a>] and is
superseded by [<a href="./rfc2460" title=""Internet Protocol, Version 6 (IPv6) Specification"">RFC2460</a>].
<span class="h3"><a class="selflink" id="section-2.3" href="#section-2.3">2.3</a>. Traceroute</span>
The Traceroute option is defined in [<a href="./rfc1393" title=""Traceroute Using an IP Option"">RFC1393</a>]. The Traceroute option
is defined as Experimental; it was never widely deployed on the
public Internet.
<span class="h3"><a class="selflink" id="section-2.4" href="#section-2.4">2.4</a>. ENCODE</span>
This option was used for experimentation around IP-layer encryption.
No products are known to ever have shipped with support for this
option.
<span class="h3"><a class="selflink" id="section-2.5" href="#section-2.5">2.5</a>. VISA</span>
This option was part of an experiment [<a href="#ref-VISA87" title=""VISA Scheme for Inter- Organizational Network Security"">VISA87</a>] [<a href="#ref-VISA89" title=""VISA Protocols for Controlling Inter-Organizational Datagram Flow"">VISA89</a>] at USC and
was never widely deployed.
<span class="h3"><a class="selflink" id="section-2.6" href="#section-2.6">2.6</a>. Address Extension</span>
The Address Extension option is defined in an Experimental RFC
[<a href="./rfc1475" title=""TP/IX: The Next Internet"">RFC1475</a>] and marked as IPv7. IPv7 was never widely deployed.
<span class="h3"><a class="selflink" id="section-2.7" href="#section-2.7">2.7</a>. Selective Directed Broadcast</span>
The Selective Directed Broadcast option was originally defined in
[<a href="./rfc1770" title=""IPv4 Option for Sender Directed Multi- Destination Delivery"">RFC1770</a>]. This option was never widely deployed and the approach
was abandoned.
<span class="h3"><a class="selflink" id="section-2.8" href="#section-2.8">2.8</a>. Dynamic Packet State</span>
The Dynamic Packet State option was specified in [<a href="#ref-DIFFSERV-DPS">DIFFSERV-DPS</a>]. The
aforementioned document was meant to be published as Experimental,
but it never became an RFC. The IP option was never widely deployed.
<span class="h3"><a class="selflink" id="section-2.9" href="#section-2.9">2.9</a>. Upstream Multicast Pkt.</span>
This option was originally specified in [<a href="#ref-BIDIR-PIM" title=""Bi-Directional Shared Trees in PIM-SM"">BIDIR-PIM</a>]. Its use was
deprecated by [<a href="./rfc5015" title=""Bidirectional Protocol Independent Multicast (BIDIR- PIM)"">RFC5015</a>], which employs a control-plane mechanism to
solve the problem of doing upstream forwarding of multicast packets
on a multi-access LAN.
<span class="grey">Pignataro & Gont Standards Track [Page 3]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-4" ></span>
<span class="grey"><a href="./rfc6814">RFC 6814</a> Deprecating Some IPv4 Options November 2012</span>
<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>. IANA Considerations</span>
The "IP OPTION NUMBERS" registry [<a href="#ref-IANA-IP" title=""IP OPTION NUMBERS"">IANA-IP</a>] 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 [<a href="#ref-IANA-IP" title=""IP OPTION NUMBERS"">IANA-IP</a>].
Copy Class Number Value Name Reference
---- ----- ------ ----- ------------------------------- ------------
1 0 8 136 SID - Stream ID [<a href="./rfc791" title=""Internet Protocol"">RFC791</a>,JBP]
1 0 14 142 VISA - Experimental Access Control [Estrin]
0 0 15 15 ENCODE - ??? [VerSteeg]
1 0 17 145 EIP - Extended Internet Protocol [<a href="./rfc1385" title=""EIP: The Extended Internet Protocol"">RFC1385</a>]
0 2 18 82 TR - Traceroute [<a href="./rfc1393" title=""Traceroute Using an IP Option"">RFC1393</a>]
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 [<a href="./rfc1063" title=""IP MTU discovery options"">RFC1063</a>] and have already been
deprecated by [<a href="./rfc1191" title=""Path MTU discovery"">RFC1191</a>].
<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>. Changing the Status of the Corresponding RFCs to Historic</span>
Per this document, the RFC Editor has changed the status of
[<a href="./rfc1385" title=""EIP: The Extended Internet Protocol"">RFC1385</a>], [<a href="./rfc1393" title=""Traceroute Using an IP Option"">RFC1393</a>], [<a href="./rfc1475" title=""TP/IX: The Next Internet"">RFC1475</a>], and [<a href="./rfc1770" title=""IPv4 Option for Sender Directed Multi- Destination Delivery"">RFC1770</a>] to Historic.
<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>. Security Considerations</span>
This document does not modify the security properties of the IPv4
options being deprecated.
<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>. Acknowledgments</span>
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.
<span class="grey">Pignataro & Gont Standards Track [Page 4]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-5" ></span>
<span class="grey"><a href="./rfc6814">RFC 6814</a> Deprecating Some IPv4 Options November 2012</span>
<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>. References</span>
<span class="h3"><a class="selflink" id="section-7.1" href="#section-7.1">7.1</a>. Normative References</span>
[<a id="ref-RFC791">RFC791</a>] Postel, J., "Internet Protocol", STD 5, <a href="./rfc791">RFC 791</a>, September
1981.
[<a id="ref-RFC1122">RFC1122</a>] Braden, R., Ed., "Requirements for Internet Hosts -
Communication Layers", STD 3, <a href="./rfc1122">RFC 1122</a>, October 1989.
<span class="h3"><a class="selflink" id="section-7.2" href="#section-7.2">7.2</a>. Informative References</span>
[<a id="ref-BIDIR-PIM">BIDIR-PIM</a>] Estrin, D. and D. Farinacci, "Bi-Directional Shared Trees
in PIM-SM", Work in Progress, May 1999.
[<a id="ref-DIFFSERV-DPS">DIFFSERV-DPS</a>]
Stoica, I., Zhang, H., Venkitaraman, N., and J. Mysore,
"Per Hop Behaviors Based on Dynamic Packet State", Work in
Progress, October 2002.
[<a id="ref-IANA-IP">IANA-IP</a>] Internet Assigned Numbers Authority, "IP OPTION NUMBERS",
<<a href="http://www.iana.org/assignments/ip-parameters">http://www.iana.org/assignments/ip-parameters</a>>.
[<a id="ref-RFC1063">RFC1063</a>] Mogul, J., Kent, C., Partridge, C., and K. McCloghrie, "IP
MTU discovery options", <a href="./rfc1063">RFC 1063</a>, July 1988.
[<a id="ref-RFC1191">RFC1191</a>] Mogul, J. and S. Deering, "Path MTU discovery", <a href="./rfc1191">RFC 1191</a>,
November 1990.
[<a id="ref-RFC1385">RFC1385</a>] Wang, Z., "EIP: The Extended Internet Protocol", <a href="./rfc1385">RFC 1385</a>,
November 1992.
[<a id="ref-RFC1393">RFC1393</a>] Malkin, G., "Traceroute Using an IP Option", <a href="./rfc1393">RFC 1393</a>,
January 1993.
[<a id="ref-RFC1475">RFC1475</a>] Ullmann, R., "TP/IX: The Next Internet", <a href="./rfc1475">RFC 1475</a>, June
1993.
[<a id="ref-RFC1770">RFC1770</a>] Graff, C., "IPv4 Option for Sender Directed Multi-
Destination Delivery", <a href="./rfc1770">RFC 1770</a>, March 1995.
[<a id="ref-RFC1812">RFC1812</a>] Baker, F., Ed., "Requirements for IP Version 4 Routers",
<a href="./rfc1812">RFC 1812</a>, June 1995.
[<a id="ref-RFC2460">RFC2460</a>] Deering, S. and R. Hinden, "Internet Protocol, Version 6
(IPv6) Specification", <a href="./rfc2460">RFC 2460</a>, December 1998.
<span class="grey">Pignataro & Gont Standards Track [Page 5]</span></pre>
<hr class='noprint'/><!--NewPage--><pre class='newpage'><span id="page-6" ></span>
<span class="grey"><a href="./rfc6814">RFC 6814</a> Deprecating Some IPv4 Options November 2012</span>
[<a id="ref-RFC5015">RFC5015</a>] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
"Bidirectional Protocol Independent Multicast (BIDIR-
PIM)", <a href="./rfc5015">RFC 5015</a>, October 2007.
[<a id="ref-VISA87">VISA87</a>] Estrin, D. and G. Tsudik, "VISA Scheme for Inter-
Organizational Network Security", IEEE Symposium on
Security and Privacy (S&P), 1987.
[<a id="ref-VISA89">VISA89</a>] 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: <a href="http://www.si6networks.com">http://www.si6networks.com</a>
Pignataro & Gont Standards Track [Page 6]
</pre>
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