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Re: [dhcwg] DDNS-DHCP [6]: Relationship between DNS TTL and DHCP lease length

Ted Lemon <mellon@nominum.com> Fri, 20 June 2003 20:55 UTC

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From: Ted Lemon <mellon@nominum.com>
To: "D. J. Bernstein" <djb@cr.yp.to>, dhcwg@ietf.org, namedroppers@ops.ietf.org
Subject: Re: [dhcwg] DDNS-DHCP [6]: Relationship between DNS TTL and DHCP lease length
Date: Fri, 20 Jun 2003 10:54:05 -0500
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On Friday 20 June 2003 14:47, D. J. Bernstein wrote:
> tinydns has supported time-to-die since version 0.85 in February 2000.
> It automatically reduces the TTL as the time-to-die approaches, and then
> eliminates the record. See http://cr.yp.to/djbdns/tinydns-data.html.

We discussed and rejected time-to-die as a solution to this problem a couple 
of meetings back (I think in Tokyo) because we were concerned that if you do 
something like this, the effect is going to be a refresh storm as the time to 
die gets closer.   So I'm very interested to know that somebody has actually 
tried this experiment.

What's your experience with this - do you have any measurements about what 
happens in practice as the time to die approaches?


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