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Versions: 00 01 02 RFC 6814

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

   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
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   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 September 1, 2012.

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
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as



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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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