I suspect you were slightly joking, but my guy feeling is that this phenomenon is too common to be caused by an unusual configuration, but must be a change in the default behaviour and the resolver s/w.


On 10/10/14 15:08, Roland Dobbins wrote:

On Oct 10, 2014, at 8:53 PM, Simon Munton <[email protected]> wrote:

I have tried unsuccessfully to reproduce this behaviour, but the fact remains 
that very recently a number of EDNS0/DNSSEC capable servers have started always 
using bufsize=512 and so repeating every single query (to any signed zone) over 
TCP.

Is it possible that some folks have overzealously misinterpreted Geoff Huston's 
article in the latest IPJ?

<http://www.internetsociety.org/sites/default/files/ipj17.1_0.pdf>

----------------------------------------------------------------------
Roland Dobbins <[email protected]> // <http://www.arbornetworks.com>

                    Equo ne credite, Teucri.

                          -- Laocoön


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