Hi,

On 2010/03/11, at 16:58, WashamFan wrote:

> Hi,
> 
> Are you sure you are defining a DHCPv4 option? It seems to me
> you were intended to define a DHCPv6 option instead.

I think both ways are possible.

If defining DHCPv4 option, the router should request DHCPv4
messages in the configured IPv6 tunnel.

If defining DHCPv6 option, the router should have an global 
IPv4 address as well as IPv6 tunnel endpoint address at the
same time, and should configure IPv6 tunnel and attach IPv4
global address to it.

In the former case, the router has to decide whether it uses
IPv4 global address or not by the reply from the DHCPv4 server
that may not exist in the network. It may bring up implementation
difficulty and also timing issue.

So, as you suggest, it may be better to use DHCPv6.

Kindest regards,

> 
> You said the option defined in the draft could be combined with
> options defined in [I-D.ietf-softwire-ds-lite-tunnel-option].
> I am not sure how DHCPv4 options combined with DHCPv6 options.
> 
> Thanks,
> washam
> 
> ----- Original Message -----
> From: Arifumi Matsumoto <[email protected]>
> Date: Wednesday, March 10, 2010 7:04 pm
> Subject: [Softwires] Fwd: New Version Notification for 
> draft-arifumi-softwire-dslite-global-addr-00
> To: [email protected]
> 
> 
>> Hi,
>> 
>> I submitted a very simple draft.
>> Any comments are welcome.
>> 
>> http://tools.ietf.org/html/draft-arifumi-softwire-dslite-global-addr-00
>> 
>> Begin forwarded message:

>>> A new version of I-D, 
>> draft-arifumi-softwire-dslite-global-addr-00.txt has been successfuly 
>> submitted by Arifumi Matsumoto and posted to the IETF repository.
>>> 
>>> Filename:         draft-arifumi-softwire-dslite-global-addr
>>> Revision:         00
>>> Title:                 Global IPv4 Address Configuration Option for 
>> DS-Lite
>>> Creation_date:         2010-03-02
>>> WG ID:                 Independent Submission
>>> Number_of_pages: 6
>>> 
>>> Abstract:
>>> When an ISP tries to deploy IPv6 and take an action for IPv4 address
>>> depletion, DS-Lite is reasonable approach for solving both of the
>>> problems.  However, it is troublesome for an ISP to have the existing
>>> IPv4 service facilities and DS-Lite facilities at the same time for
>>> not a short period of time.  This document proposes a mechanism to
>>> assign an IPv4 global address in DS-Lite framework, which makes every
>>> customer to move to DS-Lite based network, and enables an ISP to
>>> maintain single facility of the service network.
>>> 
>>> 
>>> 
>>> The IETF Secretariat.
>>> 
>>> 
>> 
>> 
>> --
>> Arifumi Matsumoto
>>   Secure Communication Project
>>   NTT Information Sharing Platform Laboratories
>>   E-mail: [email protected]
>> 
>> _______________________________________________
>> Softwires mailing list
>> [email protected]
>> https://www.ietf.org/mailman/listinfo/softwires
>> 


--
Arifumi Matsumoto
  Secure Communication Project
  NTT Information Sharing Platform Laboratories
  E-mail: [email protected]

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