On Tue, Nov 21, 2017 at 01:41:56PM +0100, Ralf Hildebrandt wrote: > Yup, seen that on a stratum 1 NTP server - all clients seem to have > the same config, thus querying my server by means of NAT instead of > using an internal stratum 2 :(
Common, probably internal, recursive DNS server but not an NTP one. I would have thought that that was a common config. Must be a lot of clients to make you notice. Cable/mobile operator? With mobiles behind a NAT gateway? Any details you can share just for curiosity's sake? -- Eray