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Re: [DNSOP] Measuring DNS TTL Violations in the wild

"Wessels, Duane" <dwessels@verisign.com> Fri, 01 December 2017 17:02 UTC

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From: "Wessels, Duane" <dwessels@verisign.com>
To: Ólafur Guðmundsson <olafur@cloudflare.com>
CC: "Giovane C. M. Moura" <giovane.moura@sidn.nl>, dnsop <DNSOP@ietf.org>
Thread-Topic: [EXTERNAL] Re: [DNSOP] Measuring DNS TTL Violations in the wild
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Date: Fri, 01 Dec 2017 17:02:09 +0000
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Subject: Re: [DNSOP] Measuring DNS TTL Violations in the wild
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> On Dec 1, 2017, at 8:38 AM, Ólafur Guðmundsson <olafur@cloudflare.com> wrote:
> 
> I strongly disagree with your "terminology", TTL is a hint about maximum caching period, not a demand or a contract. 

You say its just a hint.  If you put a TTL of 1 hour on your data, and I have a recursive name server that reuses it for 2 hours, 12 hours, 5 days... thats okay?

If its just a hint then we are we spending all this effort on "serve stale"?

DW

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