I've got nearly 300 devices to synch with my core router (7206)as master , Core router itself synchs with a Major tier 1 NTP server.
Last night I upgraded to 12.4.22T from 12.4.15,
From last night after upgrade I get this falseticker error and NTP virtually dies.
It initially works for a couple of minutes then dies , right now I'm pushing out the clock which is manually set.
The internal clock is fine and correctly set I suppose there is something wrong between the internal clock and what it gets from the server.
Wondered if anyone has face this before.