Alex,


Thanks for spelling out the conditions more accurately. Just to confirm whether 
the addition the text in red as in the following is needed for accuracy reasons.



May I ask whether we can alternatively assume that ingress filtering should 
always not be prevented. Then when the red text is missing as in version 14, is 
that still incorrect or it needs to be corrected?



REQ2: Bypassable network-layer mobility support

DMM solutions MUST enable network-layer mobility but it MUST

be possible to not use it. Mobility support is needed, for

example, when a mobile host moves and an application cannot

cope with a change in the IP address. Mobility support is

also needed, for example, when a mobile router moves together

with a host and an application in the host is interrupted by a

change of IP address of the mobile router

and the presence of ingress filtering.

However mobility

support at the network-layer is not always needed; a mobile

node can often be stationary, and mobility support can also be

provided at other layers. It is then not always necessary to

maintain a stable IP address or prefix.



H Anthony Chan



-----Original Message-----
From: dmm [mailto:[email protected]] On Behalf Of Alexandru Petrescu
Sent: Tuesday, February 04, 2014 3:28 AM
To: [email protected]
Subject: Re: [DMM] I-D Action: draft-ietf-dmm-requirements-14.txt



Thanks for this new version.



A comment:



> Mobility support is also needed, for example, when a mobile router

> moves together with a host and an application in the host is

> interrupted by a change of IP address of the mobile router.

                                                             ^and presence of 
ingress filtering.



Alex







Le 03/02/2014 23:36, [email protected]<mailto:[email protected]> 
a écrit :

>

> A New Internet-Draft is available from the on-line Internet-Drafts

> directories. This draft is a work item of the Distributed Mobility

> Management Working Group of the IETF.

>

> Title           : Requirements for Distributed Mobility Management

> Authors         : H Anthony Chan Dapeng Liu Pierrick Seite Hidetoshi

> Yokota Jouni Korhonen Filename        :

> draft-ietf-dmm-requirements-14.txt Pages           : 19 Date

> : 2014-02-03

>

> Abstract: This document defines the requirements for Distributed

> Mobility Management (DMM) at the network layer.  The hierarchical

> structure in traditional wireless networks has led primarily to

> centralized deployment models.  As some wireless networks are evolving

> away from the hierarchical structure, a distributed model for mobility

> management can be useful to them.

>

>

>

> The IETF datatracker status page for this draft is:

> https://datatracker.ietf.org/doc/draft-ietf-dmm-requirements/

>

> There's also a htmlized version available at:

> http://tools.ietf.org/html/draft-ietf-dmm-requirements-14

>

> A diff from the previous version is available at:

> http://www.ietf.org/rfcdiff?url2=draft-ietf-dmm-requirements-14

>

>

> Please note that it may take a couple of minutes from the time of

> submission until the htmlized version and diff are available at

> tools.ietf.org.

>

> Internet-Drafts are also available by anonymous FTP at:

> ftp://ftp.ietf.org/internet-drafts/

>

> _______________________________________________ I-D-Announce mailing

> list [email protected]<mailto:[email protected]>

> https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft

> directories: http://www.ietf.org/shadow.html or

> ftp://ftp.ietf.org/ietf/1shadow-sites.txt

>

>





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