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To: dnsop@cafax.se
From: "J-F C. (Jefsey) Morfin" <jefsey@club-internet.fr>
Date: Sun, 23 Feb 2003 10:12:13 +0100
In-Reply-To: <a05200f5bba7daaa04544@[10.0.1.4]>
Sender: owner-dnsop@cafax.se
Subject: Re: Why one port?

On 23:36 22/02/03, Brad Knowles said:

>At 5:53 PM +0100 2003/02/22, J-F C. (Jefsey)  Morfin wrote:
>
>>  The interest is that these two DNS parallel systems would be
>>  asynchronously managed. So they could immediately permit to check
>>  the validity of a response in one by the other.
>
>Not really.  They will be separately managed, and therefore you can be 
>reasonably guaranteed that you will frequently get different answers from 
>the two different services.  So, when they disagree (and they frequently 
>will), which is wrong?

Absolutely true. But remember that I suggest DNS.2 to be first just an 
"under development system". So it would first act only as an alarm. There 
will be first discrepancies because of bugs. They will help debugging 
faster since DNS.1 would act as reference. Then the discrepancies will be 
reduced and may be DNS.1 flaws also reduced. Ahain this would permit to 
progressively have DNS.2 switching from an alarm, to a back-up, to a 
replacement.

We all agree that sometimes the DNS will have to support Unicode and new 
services. I think the earlier we start working and testing, the smoother 
will be the transition (may take 10 years). The difference in such an 
approach with IPv6 would be that there would be no need for "tunels". It 
would start with very limited services plus test, and progressively more 
and more services, without killing DNS.1.

Ideal would be that DNS.2 stays compatible with DNS.1 permitting an 
enhancement and not a transition. To know if it is possible we need to 
consider the suggestions. At this stage I am just suggesting a "suggestions 
collection", and a collective analysis of what we may get.

jfc












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