Bob Harold wrote:
>
> On Fri, Jun 19, 2015 at 8:38 AM, <internet-dra...@ietf.org
> <mailto:internet-dra...@ietf.org>> wrote:
>
>     ...
>
>     A diff from the previous version is available at:
>     https://www.ietf.org/rfcdiff?url2=draft-ietf-dnsop-qname-minimisation-04
>
> At the end of section 6 it says:
>
> A possible solution is  
> to always use the traditional algorithm when the cache is cold and  
> then to move to QNAME minimisation.  This will decrease the privacy a  
> bit
>
> Every time the TTL of those records expires, that part of the cache is
> "cold", so it will happen regularly, and over time any repeated query
> will show up in the logs, so I think it affects privacy much more than
> "a bit" and should be avoided completely if privacy is a concern.
> Does that make sense?

i agree with bob harold's analysis of the likely outcome of the 'when
cold' approach described in the above quote.

-- 
Paul Vixie

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