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In this episode of PING, APNIC Chief Scientist Geoff Huston and I discuss a traffic behaviour in the DNS which Geoff has noticed in the labs advertising based experimental data capture. Virtually every DNS query Geoff sees, he sees twice (or more). For a cohort of about 150 million unique DNS labels on a given day, The Labs system is collecting 270 million incoming DNS queries. Thats a lot of duplication. What's going on?
The advertising data collection depends on issuing unique DNS queries, which in turn generate unique web page serves. This allows measurement of internet-wide behaviour on…
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