Using BIND - was Re: [ntp:questions] Re: How long doI havetowaitfor sync?
You have no need to know
anjahnoaoed at fl.net.invalid
Sun Jun 5 08:35:27 UTC 2005
Abandoning the right to remain silent, Brad Knowles at Sat, 04 Jun 2005
11:00:37 -0500 said:
> At 7:10 AM +0000 2005-06-04, David J Taylor wrote:
>> What I am asking is this: if I set up such a recursive/caching server, can
>> I get it to talk to more than one external DNS server (from the point of
>> view of it looking up external Internet addresses)?
> Yes. In fact, you'd have to do some work to get it to do
> anything else. By the very nature of the DNS, information is
> distributed around various servers in the world, and as you ask
> various questions your server will find out where those machines are
> and get the information from them.
While this is true I wonder if it is the answer he's expecting.
If you make a DNS query and get a reply (any reply) that is supposed to be
the end of the story. At least for the TTL value in the reply. Asking
another namseserver is not supposed to return a different answer.
DNS is a distributed database where every copy of a zone is supposed to be
identical within the limitations of the time it takes to perform
replication (a.k.a. zone transfer, whether incremental or complete).
Avoid reality at all costs.
$email =~ s/n(.)a(.)n(.)a(.)e(.+)invalid/$1$2$3$4$5au/;
icbm: 33.43.46S 150.59.27E
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