Dynamically Reducing TTL of few selected ResourceRecords

novosirj at umdnj.edu novosirj at umdnj.edu
Mon Oct 1 02:44:03 UTC 2012


OK well it helps with AD nameservers set to forward to some other nameservers for a domain, but I can't say why. 

Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: Barry Margolin <barmar at alum.mit.edu>
Sender: bind-users-bounces+novosirj=umdnj.edu at lists.isc.org
Date: Sun, 30 Sep 2012 21:14:25 
To: <comp-protocols-dns-bind at isc.org>
Subject: Re: Dynamically Reducing TTL of few selected ResourceRecords

In article <mailman.331.1349053886.11945.bind-users at lists.isc.org>,
 novosirj at umdnj.edu wrote:

> A secret a co-worker taught me is to dig ANY on a record. Chances are most 
> queries are A queries only. If you have HINFO records or anything else, it 
> will not use the cached data. I don't actually know for sure that that works 
> on a removed entry though. 

That's not correct. If you ask a caching server for ANY records, it will 
just return the types that happen to be in its cache.

-- 
Barry Margolin
Arlington, MA
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