<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Nov 5, 2016, at 10:02 PM, Gavin McCullagh <<a href="mailto:gmccullagh@gmail.com" class="">gmccullagh@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="">Yes, that's it Andrew, many thanks. <br class=""><br class="">Shame it wasn't published more formally :-/<br class=""></div></div></div></blockquote><div><br class=""></div>I have been once in a while doing some additional work on this topic. </div><div>Maybe soon I will finish writing something up. </div><div><br class=""></div><div>Olafur</div><div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class=""><br class=""></div>Gavin<br class=""></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Sat, Nov 5, 2016 at 5:14 PM, Andrew Sullivan <span dir="ltr" class=""><<a href="mailto:ajs@anvilwalrusden.com" target="_blank" class="">ajs@anvilwalrusden.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I know that I worked on a paper on this with Ólafur (he did the real<br class="">
work, I was just involved in some writing and drawing some additional<br class="">
distinctions) when we both worked at Shinkuro, but I'm pretty sure the<br class="">
paper never found a home. I found a presentation by just him,<br class="">
however:<br class="">
<br class="">
<a href="http://archive.icann.org/en/meetings/siliconvalley2011/bitcache/Conclusions%20from%20DNS%20Traces%20-%20Olafur%20Gudmunsson,%20Shinkuro-vid=23075&disposition=attachment&op=download.pdf" rel="noreferrer" target="_blank" class="">http://archive.icann.org/en/<wbr class="">meetings/siliconvalley2011/<wbr class="">bitcache/Conclusions%20from%<wbr class="">20DNS%20Traces%20-%20Olafur%<wbr class="">20Gudmunsson,%20Shinkuro-vid=<wbr class="">23075&disposition=attachment&<wbr class="">op=download.pdf</a><br class="">
<br class="">
Maybe that's it?<br class="">
<br class="">
A<br class="">
<div class="HOEnZb"><div class="h5"><br class="">
On Sat, Nov 05, 2016 at 02:43:32PM -0700, Gavin McCullagh wrote:<br class="">
> Hi,<br class="">
><br class="">
> I'm searching in vain for a link to a paper or presentation I'm sure I've<br class="">
> read in the past.<br class="">
><br class="">
> It described measurements of the various resolvers' behaviour, specifically<br class="">
> which NS records they tend to cache and reuse in practice for a given zone<br class="">
> cut -- the non-authoritative delegations from the parent zone or the<br class="">
> authoritative records from the child zone.<br class="">
><br class="">
> Any chance someone has a link to hand?<br class="">
><br class="">
> Gavin<br class="">
<br class="">
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</span><span class="HOEnZb"><font color="#888888" class="">--<br class="">
Andrew Sullivan<br class="">
<a href="mailto:ajs@anvilwalrusden.com" class="">ajs@anvilwalrusden.com</a><br class="">
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