Re: [MEXT] Call for adoption of draft-premec-mext-extended-home-link

[Julien Bournelle <julien.bournelle at gmail.com>]

Hi,

 see inline,

On Thu, Mar 12, 2009 at 11:51 AM, Premec, Domagoj
<domagoj.premec at siemens.com> wrote:
> Hi Julien,
>
> The main motivation behind the IPv6-only home link is not the inability of the link to carry the IPv4.  The operator may choose to deploy the IPv6-only network to save the additional managment costs (and headache) associated with operating the dual stack network. Or the operator may prefer IPv6 due to the IPv4 address shortage. Please have a look also at the http://www.ietf.org/internet-drafts/draft-ietf-softwire-dual-stack-lite-00.txt for another example of the IPv6-only link. Given the above considerations and the need to move towards the IPv6 in general, I believe that there is some value in the concept of the IPv6-only home link and that there will be deployments making use of this capability.
>


 but what I don't understand is that in your I-D, the MN has a v4 HoA,
the HA has a v4 address and you are on the home link. So I don't see
what prevents you from using IPv4 on this link. I fail to understand
the use case.

 Do you have a specific deployment in mind ?

 regards,

 Julien

> regards,
> domagoj
>
>
>> -----Original Message-----
>> From: mext-bounces at ietf.org [mailto:mext-bounces at ietf.org] On
>> Behalf Of Julien Bournelle
>> Sent: 11. ozujak 2009 18:44
>> To: marcelo bagnulo braun
>> Cc: mext
>> Subject: Re: [MEXT] Call for adoption of
>> draft-premec-mext-extended-home-link
>>
>> Hi all,
>>
>>  I have a question regarding this draft.
>>
>>  What sort of link can carry IPv6 but not IPv4 ?
>>
>>  Regards,
>>
>>  Julien
>>
>> On Wed, Mar 4, 2009 at 9:38 PM, marcelo bagnulo braun
>> <marcelo at it.uc3m.es> wrote:
>> > Hi,
>> >
>> > This is call for adoption for
>> draft-premec-mext-extended-home-link-00
>> > as WG item to cover the charter item:
>> >
>> > (A.9) Extended DSMIPv6 Home Network Support: DSMIPv6
>> assumes the home
>> > network to be dual stack providing simultaneous IPv6 and
>> > IPv4 network access. It is proposed to extend DSMIPv6 to
>> support home
>> > networks which provides IPv4, or IPv6 respectively, direct network
>> > access only, but where virtual IPv6 home network connectivity, or
>> > virtual IPv4 home network connectivity respectively, may be
>> obtained
>> > by tunneling to the HA. The latter shall be obtained by DSMIPv6
>> > operation using the v4HoA address as Care-of-address for the v6HoA
>> > address, and vice versa, the v6HoA address as
>> care-of-address for the
>> > v4HoA address.
>> >
>> > The document can be found at:
>> >
>> > http://tools.ietf.org/html/draft-premec-mext-extended-home-link-00
>> >
>> > Please express your opinion on whether this should become a WG
>> > document before the march 19
>> >
>> > thanks, Julien and marcelo
>> > _______________________________________________
>> > MEXT mailing list
>> > MEXT at ietf.org
>> > https://www.ietf.org/mailman/listinfo/mext
>> >
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>