Mobility EXTensions for IPv6 (mext)
-----------------------------------

Charter
Last Modified: 2011-01-25

Current Status: Active Working Group

Chair(s):
    Julien Laganier  <[email protected]>
    Marcelo Bagnulo  <[email protected]>

Internet Area Director(s):
    Ralph Droms  <[email protected]>
    Jari Arkko  <[email protected]>

Internet Area Advisor:
    Jari Arkko  <[email protected]>

Mailing Lists:
    General Discussion:[email protected]
    To Subscribe:      https://www.ietf.org/mailman/listinfo/mext
    Archive:           http://www.ietf.org/mail-archive/web/mext

Description of Working Group:

Mobile IPv6 specifies routing support which permits an IPv6 host to
continue using its home address as it moves around the Internet,
enabling continuity of sessions. Mobile IPv6 supports transparency above
the IP layer, including maintenance of active transport level sessions.
In addition, network mobility (NEMO) mechanisms built on top of Mobile
IPv6 allow managing the mobility of an entire network, as it changes its
point of attachment to the Internet. The base specifications consist of:

 o RFC 3775 (Mobile IPv6)
 o RFC 3963 (NEMO)
 o RFC 4877 (Mobile IPv6 Operation with IKEv2)
 o RFC 5555 (Dual Stack Mobile IPv6)
 o RFC 5648 (Multiple Care-of Addresses Registration)
 o RFC 5846 (Binding Revocation)
 o RFC-to-be (Flow Binding Policy Transport and Flow Binding Policy
   Format)

The MEXT Working Group continues the work of the former MIP6, NEMO, and
MONAMI6 Working Groups.

The primary goal of MEXT will be to enhance base IPv6 mobility by
continuing work on developments that are required for wide-scale
deployments and specific deployment scenarios. Additionally, the working
group will ensure that any issues identified by implementation and
interoperability experience are addressed, and that the base
specifications are maintained. The group will also produce informational
documentation, such as design rationale documents or description of
specific issues within the protocol.

The MEXT WG will also explore experimental alternative security
mechanisms. The security mechanism specified in the existing standard
track RFCs (RFC3775bis, RFC4877) remains the mandatory to implement
mechanism that guarantees interoperability between different
implementations. The MEXT WG is chartered to deliver one or more
experimental alternative mechanisms. All the alternative solutions will
be published as experimental RFCs.

The working group will also work on operational considerations on
setting up Mobile IPv6 networks so that traffic is distributed
in an optimal way, for instance by using existing protocol mechanisms
to select the closest home agents for new clients.

In addition, the working group will bring to completion earlier work on
prefix delegation for NEMO, RADIUS  support for Mobile IPv6, Mobile IPv6
operation with firewalls, and home agent reliability specifications.

Work items related to base specification maintenance include: Create and
maintain issue lists that are generated on the basis of implementation
and interoperability experience. Address specific issues with specific
updates or revisions of the base specification. Currently known specific
issues include support for overlapping (private) IPv4 home addresses,
negotiation of the protection required for payload traffic, and
discovery of the home agent address in IPv4-only networks.

Goals and Milestones:

  Done         Submit I-D 'Mobile IPv6 Vendor Specific Option' to IESG for
               publication as a Proposed Standard

  Done         Submit I-D 'Mobile IPv6 Experimental Allocations' to IESG for
               publication as a Proposed Standard

  Done         Submit I-D 'Mobile IPv6 Dual-Stack Operation' to IESG for
               publication as a Proposed Standard.

  Done         Submit I-D 'Motivation for Authentication I-D' to IESG for
               publication as Informational.

  Done         Submit Multiple CoA Registration to IESG

  Done         Submit I-D 'Goals for AAA HA Interface' to IESG for publication
               as Informational.

  Done         Submit -00 draft on Route Optimization Needs for Automobile and
               Highway Deployments

  Done         Submit -00 draft on Route Optimization Needs for Aircraft and
               Spacecraft Deployments

  Done         Submit I-D 'Mobility Header Home Agent Switch Message' to IESG
               for publication as a Proposed Standard

  Done         Submit final doc on Route Optimization Needs for Aircraft and
               Spacecraft Deployments, for Informational

  Done         Submit 00 draft on Binding Revocation

  Done         Submit the final doc on MIB for NEMO Basic Support to the IESG,
               for Proposed Standard

  Done         Submit draft on Binding Revocation to IESG

  Done         Submit the final doc on Prefix Delegation for NEMO to the IESG,
               for Proposed Standard

  Done         Submit I-D(s) related to specific updates and corrections of
               RFC 3775 to IESG for publication as Proposed Standard.

  Jun 2011       Submit I-D 'Mobile IPv6 Operation with Firewalls' to IESG for
               publication as Informational.

  Jun 2011       Submit I-D 'Home agent reliability' to IESG for publication as
               a Proposed Standard.

  Aug 2011       Submit I-Ds on alternative security mechanisms to the IESG for
               publication as Experimental.

  Sep 2011       Submit I-D 'Overlapping IPv4 address support' to IESG for
               publication as Proposed Standard.

  Sep 2011       Submit I-D 'Home agent discovery in IPv4-only networks via
               DHCP' to IESG for publication as Proposed Standard.

  Oct 2011       Submit I-D 'Operational considerations for distributed use of
               Mobile IPv6' for publication as Informational.

  Dec 2011       Submit I-D 'Negotiation of the protection for payload traffic'
               to IESG for publication as Proposed Standard.

  Dec 2011       Submit the I-D 'RADIUS Mobile IPv6 Support' to IESG for
               publication as a proposed standard.


Internet-Drafts:

Posted Revised         I-D Title   <Filename>
------ ------- --------------------------------------------
Jun 2006 Nov 2010   <draft-ietf-mip6-hareliability-08.txt>
               Home Agent Reliability Protocol (HARP)

Jun 2008 Mar 2011   <draft-ietf-mext-rfc3775bis-13.txt>
               Mobility Support in IPv6

Jun 2008 Dec 2010   <draft-ietf-mext-nemo-pd-07.txt>
               DHCPv6 Prefix Delegation for NEMO

Request For Comments:

 RFC   Stat Published     Title
------- -- ----------- ------------------------------------
RFC5488 PS   Apr 2009    Network Mobility (NEMO) Management Information Base

RFC5555 PS   Jun 2009    Mobile IPv6 Support for Dual Stack Hosts and Routers

RFC5637 I    Sep 2009    Authentication, Authorization, and Accounting (AAA)
                      Goals for Mobile IPv6

RFC5648 PS   Oct 2009    Multiple Care-of Addresses Registration

RFC5522 I    Oct 2009    Network Mobility Route Optimization Requirements for
                      Operational Use in Aeronautics and Space Exploration
                      Mobile Networks

RFC5846 PS   Jun 2010    Binding Revocation for IPv6 Mobility

RFC6088 PS   Jan 2011    Traffic Selectors for Flow Bindings

RFC6089 PS   Jan 2011    Flow Bindings in Mobile IPv6 and Network Mobility (NEMO)
                      Basic Support