Also worth considering "NTPsec has removed lots of stuff that has zero reported bugs in them, like sntp, the ntpsnmd code, and various refclocks." And reading

Also worth considering "NTPsec has removed lots of stuff that has zero reported bugs in them, like sntp, the ntpsnmd code, and various refclocks." And reading this comment: https://lwn.net/Articles/714279/ https://lwn.net/Articles/714279/ "in general all the other NTP implementations likewise lack broad support for all the various reference clock hardware and drivers. This is why ntpd is still used so heavily as stratum 1 servers." And, additionally.. are the servers running Windows a small and obscure base?