Nearly every DNS query appears twice — This indicates potential inefficiencies in caching mechanisms or browser behavior.
Intermediary systems like caches and proxies can observe and reissue requests — Suggests that network infrastructure might be unnecessarily duplicating traffic.
Network operators may optimize their caching strategies to reduce unnecessary duplication.
In this episode of PING, APNIC Chief Scientist Geoff Huston and I discuss a pattern of DNS traffic that Geoff has observed through APNIC Labs’ advertising-based measurement system.
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