[ntp:questions] Confused about pool rotation

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Wed Feb 6 21:42:50 UTC 2013


David Woolley wrote:
> no-one at no-place.org wrote:
>> where hints has been set up to define a socket type
>>  of SOCK_DGRAM and family of AF_INET.
>> As expected, the Internet address returned in *gaires
>>  does change from time to time.
>> But it seems that it often returns the same value
>>  if I call it again after a short time.

> That could well be considered a denial of service attack
>  on the pool DNS server!


>> But if I wait a minute or two then I get a different address.

A 2^6 = 64 sec = 1.07min rate should be acceptable;
 even more so, if he is querying e.g. his ISP's
 caching server.

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