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Message History

DNS Cold Start
In this episode of PING, APNIC Chief Scientist Geoff Huston and I discuss the behaviour of the DNS system when you have to come up from nothing: the “cold start” where no data exists from prior queries in your “cache”. This stems from a talk given by Ondřej Surý, that Geoff saw at the recent RIPE-92 Meeting held in Edinburgh, in the DNS working group. Cache, is the things you h...

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Canonical Cache Representation
In this episode of PING, we talk with Job Snijders about secure Internet routing again, focusing on an approach to preserving the state of RPKI as a longterm historical record for research and analysis. Job was last on PING to discuss the “Erik” protocol. Job has been running an archive of RPKI state for some time, as a volunteer activity but an exercise which was feasible when...

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DNS Query Duplication
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. ...

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Testing RSSAC 028 DNS root server name choices
In this episode of PING, we talk with Willem Toorop about a measurement of 6 choices for naming the root servers of the global DNS. This measurement was motivated by RSSAC 028, a 2017 technical analysis for ICANN of the naming scheme used by the root DNS servers. Root name servers are part of the global DNS system, and they provide basic bootstrapping for every other DNS resolv...

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What ‘name-based routing’ really means
In recent PING episodes, APNIC Chief Scientist Geoff Huston has asserted that Internet routing has shifted away from traditional IP packet forwarding. Instead, it is increasingly driven by processes that map names to addresses. It’s no longer just about your IP address or the specific endpoint you think you’re connecting to, it’s about your location and which intermediary servic...

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