[dns-operations] Whimsical AXFR behavior ?

[Colm MacCárthaigh]

Another possibility is that the problem is general to all TCP queries and
that a limited number of source ports are permitted in.


On Sun, Jun 23, 2013 at 4:56 PM, Jon Lewis <jlewis at lewis.org> wrote:

> On Mon, 24 Jun 2013, Marjorie wrote:
>
>  4. Now something more puzzling, I have noticed at least one NS that
>> exhibits some sort of random behavior: it typically denies AXFR at the
>> first attempt but after repeating the request five or seven times (more or
>> less) it finally releases the zone data as requested... some days it is not
>> in a good mood: after 20 tries it still says "No !" o:) So that depends. I
>> am really wondering what makes a NS behave like that ?
>>
>
> Load-balancer + some fraction of misconfigured servers that haven't
> restricted AXFR access?
>
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-- 
Colm
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