Re: [nemo] Re: don't deprecate DHAAD (was: I-D ACTION:draft-ietf-nemo-dhcpv6-pd-01.txt)

Francis Dupont <Francis.Dupont@point6.net> Fri, 10 March 2006 18:09 UTC

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From: Francis Dupont <Francis.Dupont@point6.net>
To: Alexandru Petrescu <alexandru.petrescu@motorola.com>
Subject: Re: [nemo] Re: don't deprecate DHAAD (was: I-D ACTION:draft-ietf-nemo-dhcpv6-pd-01.txt)
In-reply-to: Your message of Thu, 09 Mar 2006 17:03:33 +0100. <441051D5.7030006@motorola.com>
Date: Fri, 10 Mar 2006 19:09:48 +0100
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 In your previous mail you wrote:

   > [...] and there has also been a talk about deprecating DHAAD (I
   > disagree with deprecating DHAAD).
   
=> it seems it was a good idea to change the subject (:-)

   I disagree too with deprecating DHAAD.
   
=> there are two basic issues with DHAAD:
 - the needed function is more HA assignment than HA discovery.
 - the current anycast DHAAD mechanism can't be made secure.
Please note the current DHAAD is optional.

   I think there is one draft dhaad-harmful.
   
=> yes, I am its editor. The proposal is to switch to the DNS SRV RR
from the bootstrapping DT. BTW I believe it is useful to work on
all kinds of HA switching mechanisms too.

   But there is draft-arkko-mip6-3775bis-ndmobext-00 which clearly mentions
   the HA list and it being maintained by DHAAD.
   
=> is your argument about the function or about the mechanism?

   There is at least one implementation of non-anycast DHAAD which works 
   just fine (although not yet secure).
   
=> this comment suggests the function.

Regards
   
Francis.Dupont@point6.net