Int-Area C. Pignataro
Internet-Draft Cisco Systems
Intended status: Standards Track F. Gont
Expires: September 1, 2012 UTN-FRH / SI6 Networks
February 29, 2012
Formally Obsoleting some Historic IPv4 Options
draft-gp-intarea-obsolete-ipv4-options-iana-00
Abstract
A number of IPv4 options have become obsolete in practice, but have
never been formally obsoleted. This document obsoletes such IPv4
options, thus cleaning up the corresponding IANA registry, and
serving as a basis for providing advice about the filtering of
packets containing these options.
Status of this Memo
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This Internet-Draft will expire on September 1, 2012.
Copyright Notice
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Discussion of Obsoleted Options . . . . . . . . . . . . . . . . 3
2.1. Stream ID . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Extended Internet Protocol . . . . . . . . . . . . . . . . 3
2.3. Traceroute . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4. Address Extension . . . . . . . . . . . . . . . . . . . . . 3
2.5. Selective Directed Broadcast . . . . . . . . . . . . . . . 3
2.6. Dynamic Packet State . . . . . . . . . . . . . . . . . . . 3
2.7. Upstream Multicast Pkt. . . . . . . . . . . . . . . . . . . 4
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.1. Normative References . . . . . . . . . . . . . . . . . . . 5
6.2. Informative References . . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 6
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1. Introduction
The Internet Protocol version 4 (IPv4) [RFC0791] 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 obsoleted. This document obsoletes such IPv4
options, "cleaning up" the corresponding IANA registry.
2. Discussion of Obsoleted Options
2.1. Stream ID
The Stream ID option is obsolete. It is specified in RFC 791
[RFC0791], and obsoleted in Section 3.2.1.8 of RFC 1122 [RFC1122] and
Section 4.2.2.1 of RFC 1812 [RFC1812].
2.2. Extended Internet Protocol
The Extended Internet Protocol option is defined in [RFC1385], and is
superseded by [RFC2460].
2.3. Traceroute
The Traceroute option is defined in [RFC1393]. The Traceroute option
is defined as "experimental" and it was never widely deployed on the
public Internet.
2.4. Address Extension
The Address Extension option is defined in the Experimental
[RFC1475], and marked as IPv7.
2.5. Selective Directed Broadcast
The Selective Directed Broadcast option is originally defined in
[RFC1770].
2.6. Dynamic Packet State
The Dynamic Packet State option was specified in
[I-D.stoica-diffserv-dps]. The aforementioned document was meant to
be published as "Experimental", but never made it into an RFC.
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2.7. Upstream Multicast Pkt.
This options was originally specified in [draft-farinacci-bidir-pim].
Its use was obsoleted by [RFC5015], which employs a control plane
mechanism to solve the problem of doing upstream forwarding of
multicast packets on a multi-access LAN.
3. IANA Considerations
The "IP OPTION NUMBERS" registry [IANA-IP] contains the list of the
currently assigned IP option numbers. This registry also denotes an
obsoleted IP Option Number by marking it with a single asterisk
("*").
This document formally obsoletes the following options, and requests
IANA to mark them as such in the corresponding registry [IANA-IP].
Copy Class Number Value Name Reference
---- ----- ------ ----- ------------------------------- ------------
1 0 8 136 SID - Stream ID [RFC791,JBP]*
0 0 11 11 MTUP - MTU Probe [RFC1191]*
0 0 12 12 MTUR - MTU Reply [RFC1191]*
1 0 17 145 EIP - Extended Internet Protocol[RFC1385]*
0 2 18 82 TR - Traceroute [RFC1393]*
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]*
4. Security Considerations
This document does not modify the security properties of the IPv4
Options being obsoleted. However, formally obsoleting these options
serves as a basis for e.g. providing advice about filtering packets
containing these options (as in
[I-D.gont-opsec-ip-options-filtering]).
5. Acknowledgments
The authors would like to thank Ron Bonica for his guidance.
The authors would like to thank Ran Atkinson, Fred Baker, Dino
Farinacci, and Andrew Malis for providing insights on some of the
options being formally obsoleted by this document.
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6. References
6.1. Normative References
[RFC0791] Postel, J., "Internet Protocol", STD 5, RFC 791,
September 1981.
[RFC1122] Braden, R., "Requirements for Internet Hosts -
Communication Layers", STD 3, RFC 1122, October 1989.
[RFC1191] Mogul, J. and S. Deering, "Path MTU discovery", RFC 1191,
November 1990.
[RFC1393] Malkin, G., "Traceroute Using an IP Option", RFC 1393,
January 1993.
[RFC1812] Baker, F., "Requirements for IP Version 4 Routers",
RFC 1812, June 1995.
6.2. Informative References
[I-D.gont-opsec-ip-options-filtering]
Gont, F., Atkinson, R., and C. Pignataro, "Recommendations
on filtering of IPv4 packets containing IPv4 options",
draft-gont-opsec-ip-options-filtering-03 (work in
progress), February 2012.
[I-D.stoica-diffserv-dps]
Stoica, I., Zhang, H., Baker, F., and Y. Bernet, "Per Hop
Behaviors Based on Dynamic Packet State",
draft-stoica-diffserv-dps-02 (work in progress),
October 2002.
[IANA-IP] Internet Assigned Numbers Authority, "IP OPTION NUMBERS",
April 2011,
<http://www.iana.org/assignments/ip-parameters>.
[RFC1063] Mogul, J., Kent, C., Partridge, C., and K. McCloghrie, "IP
MTU discovery options", RFC 1063, July 1988.
[RFC1385] Wang, Z., "EIP: The Extended Internet Protocol", RFC 1385,
November 1992.
[RFC1475] Ullmann, R., "TP/IX: The Next Internet", RFC 1475,
June 1993.
[RFC1770] Graff, C., "IPv4 Option for Sender Directed Multi-
Destination Delivery", RFC 1770, March 1995.
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[RFC2460] Deering, S. and R. Hinden, "Internet Protocol, Version 6
(IPv6) Specification", RFC 2460, December 1998.
[RFC5015] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
"Bidirectional Protocol Independent Multicast (BIDIR-
PIM)", RFC 5015, October 2007.
[draft-farinacci-bidir-pim]
Estrin, D. and D. Farinacci, "Bi-Directional Shared Trees
in PIM-SM", IETF Internet Draft,
draft-farinacci-bidir-pim, work in progress, May 1999.
Authors' Addresses
Carlos Pignataro
Cisco Systems
7200-12 Kit Creek Road
Research Triangle Park, NC 27709
US
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
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