nanog mailing list archives

Re: Slashdot: Providers Ignoring DNS TTL?


From: Valdis.Kletnieks () vt edu
Date: Wed, 20 Apr 2005 15:30:45 -0400

On Wed, 20 Apr 2005 14:00:00 EDT, Dean Anderson said:
On Wed, 20 Apr 2005 sthaug () nethelp no wrote:
Where do you see any connection between anycast and ignoring DNS TTL?
The data he showed isn't necessarilly "ignoring ttl".  If there are
multiple anycasted caching servers behind a specific IP address, then
those several cache's will each have a different state.  Since, [as I
explained, and was supposed by the poster], there is "some kind of load
balancing going on", and also since implementors of anycast caches have
posted questions and explained their purposes [which could be seen as
"load balancing"], this is a likely explanation.  It may not be the only
explanation: e.g. they could be restarting their nameservers every thirty
seconds. But "anycast loadbalancing" of a caching server is probably the
most likely.

All fine and good.  But nowhere in your long paragraph do you actually
address Steinar's question, which is "What does this rant have to do with
*ignoring* *DNS* *TTL*?"

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