Mobile IPv6 Experimental Messages
RFC 5096

Document Type RFC - Proposed Standard (December 2007; No errata)
Last updated 2013-03-02
Replaces draft-devarapalli-mip6-experimental-messages
Stream IETF
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IESG IESG state RFC 5096 (Proposed Standard)
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Responsible AD Jari Arkko
Send notices to mip6-chairs@ietf.org,draft-ietf-mip6-experimental-messages@ietf.org
Network Working Group                                     V. Devarapalli
Request for Comments: 5096                               Azaire Networks
Category: Standards Track                                  December 2007

                   Mobile IPv6 Experimental Messages

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Abstract

   This document defines a new experimental Mobility Header message and
   a Mobility option that can be used for experimental extensions to the
   Mobile IPv6 protocol.

Table of Contents

   1. Introduction ....................................................1
   2. Terminology .....................................................2
   3. Experimental Mobility Header Message ............................3
   4. Experimental Mobility Option ....................................3
   5. Security Considerations .........................................4
   6. IANA Considerations .............................................5
   7. Acknowledgements ................................................5
   8. References ......................................................5
      8.1. Normative References .......................................5
      8.2. Informative References .....................................5

1.  Introduction

   When experimenting with a protocol or defining a new extension to a
   protocol, one needs either a protocol number, a new message, or an
   option to carry the information related to the experiment.  Most
   implementations end up using unassigned values for the new messages.
   Many times this creates problems when the same value is assigned
   through the IETF standards action, by IANA, or if the implementation
   gets deployed with these messages.  Therefore, it is considered a
   good practice to set aside some code points that identify the
   experimental protocols or messages for experimental purposes.  The
   need for experimental messages is shown in [3].

Devarapalli                 Standards Track                     [Page 1]
RFC 5096              MIPv6 Experimental Messages          December 2007

   This document defines new messages for experimenting with extensions
   to the Mobile IPv6 protocol.  These messages should be strictly used
   for experiments.  Experiments that are successful should be
   standardized in the IETF.  An implementation MUST NOT be released or
   deployed with the experimental messages.

   This document defines a new Mobility Header message, which is the
   Experimental Mobility message that can be sent at any time by the
   mobile node, the home agent or the correspondent node.  Since
   Mobility Header messages cannot be combined and sent in one packet,
   there is always only one Mobility Header message in any Mobile IPv6
   packet.  Home agent or correspondent node implementations that do not
   recognize the mobility message type, discard the message and send a
   Binding Error message as described in [2], with the Status field set
   to 2 (unrecognized MH Type value).  Mobile nodes that do not
   recognize the mobility message type should discard the message and
   send an ICMP Parameter problem with code 0.

   This document also defines a new mobility option, the Experimental
   Mobility option, which can be carried in any Mobility Header message.
   Mobility options, by definition, can be skipped if an implementation
   does not recognize the mobility option type [2].

   The messages defined in this document can also be used for Network
   Mobility (NEMO) [4] and Proxy Mobile IPv6 [5] since these protocols
   also use Mobility Header messages.

   Experimental code points could potentially disrupt a deployed network
   when experiments using these code points are performed in the
   network.  Therefore, the network scope of support for experimental
   values should carefully be evaluated before deploying any experiment
   across extended network domains, such as the public Internet.

   Experimental mechanisms should only be used for actual
   experimentation.  By design, only a single code point is allocated
   for the message and another one for the option.  This limits the
   number of experiments among a set of peers to one at a time.  When
   experimental mechanisms are shown to be useful, and there is a desire
   to deploy them beyond the experiment they should be standardized and
   given new code points.

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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