On Mon, Dec 19, 2016 at 01:32:50PM -0700, David wrote: > I found devices doing lookups for all of these at the same time > {0,0.uk,0.us,asia,europe,north-america,south-america,oceania,africa,europe}.pool.ntp.org > and then it proceeds to use everything returned, which explains why > everyone is seeing an increase.
Thanks, David. That perfectly matches the list of servers used by older versions of the ios-ntp library[1][2], which would point toward some iPhone app being the source of the traffic. [1] https://github.com/jbenet/ios-ntp/blob/d5eade6a99041094f12f0c976dd4aaeed37e0564/ios-ntp-rez/ntp.hosts [2] https://github.com/jbenet/ios-ntp/blob/5cc3b6e437a6422dcee9dec9da5183e283eff9f2/ios-ntp-lib/NetworkClock.m#L122 -- Jan Tore Morken