Re: [dhcwg] New Version Notification for draft-wing-dhc-dns-reconfigure-01.txt

Hmmm... My first reaction was "this is crazy"...

The useful nugget in this draft is the host mode detection that is done 
by the relay and its communication to the server. It applies to much 
more than just DNS server list prioritization.

Why not generalize this a little bit? That is, have the relay send 
generic messages such as "host A changed from mode X to mode Y" to the 
server. The server would then decide whatever actions need to be done, 
such as reconfiguring DNS server lists.

Simon

Le 2013-06-07 14:56, mohamed.boucadair@orange.com a écrit :
> FWIW, more discussion on the problem space can be found here: http://www.ietf.org/mail-archive/web/v6ops/current/msg16276.html or http://tools.ietf.org/html/draft-kaliwoda-sunset4-dual-ipv6-coexist-01#section-2.
>
> draft-wing-* solves this issue for dhcp-enabled networks.
>
> Cheers,
> Med
>
>> -----Message d'origine-----
>> De : Prashanth Patil (praspati) [mailto:praspati@cisco.com]
>> Envoyé : vendredi 7 juin 2013 14:45
>> À : dhcwg@ietf.org
>> Cc : Dan Wing (dwing); Tirumaleswar Reddy (tireddy); BOUCADAIR Mohamed
>> OLNC/OLN
>> Objet : FW: New Version Notification for draft-wing-dhc-dns-reconfigure-
>> 01.txt
>>
>> Hi all,
>> This draft proposes a mechanism to extend DHCPv6 such that a DHCPv6 Relay
>> Agent can dynamically influence priority of DNS servers provided to a
>> host, so that a host can use an optimal DNS server for resolution.
>>
>>
>> Regards,
>> Prashanth
>>
>> On 07/06/13 6:05 PM, "internet-drafts@ietf.org" <internet-drafts@ietf.org>
>> wrote:
>>
>>>
>>> A new version of I-D, draft-wing-dhc-dns-reconfigure-01.txt
>>> has been successfully submitted by Dan Wing and posted to the
>>> IETF repository.
>>>
>>> Filename:	 draft-wing-dhc-dns-reconfigure
>>> Revision:	 01
>>> Title:		 DHCPv6 Dynamic DNS Reconfiguration
>>> Creation date:	 2013-06-07
>>> Group:		 Individual Submission
>>> Number of pages: 8
>>> URL:
>>> http://www.ietf.org/internet-drafts/draft-wing-dhc-dns-reconfigure-01.txt
>>> Status:
>>> http://datatracker.ietf.org/doc/draft-wing-dhc-dns-reconfigure
>>> Htmlized:
>>> http://tools.ietf.org/html/draft-wing-dhc-dns-reconfigure-01
>>> Diff:
>>> http://www.ietf.org/rfcdiff?url2=draft-wing-dhc-dns-reconfigure-01
>>>
>>> Abstract:
>>>    Some networks are expected to support IPv4-only, dual-stack, and
>>>    IPV6-only hosts at the same time.  This makes prioritizing the DNS
>>>    servers for hosts tricky due to a heterogeneous mix of protocol
>>>    stacks causing optimal behavior to occur only when the host stack re-
>>>    initializes.  The networks infrastructure is usually well equipped to
>>>    be aware of single/dual-stack nature of hosts.  This specification
>>>    extends DHCPv6 so that a DHCPv6 Relay Agent can dynamically influence
>>>    the priority of DNS servers provided to the host, so that the host
>>>    can use an optimal DNS server for resolution.
>>>
>>>
>>>
>>>
>>>
>>> The IETF Secretariat
>>>
>
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