What is LCL, the Local Clock?
The LCL is no reference clock in reality; instead it simply refers to the system time on the current machine. Therefore it should never be used, except when the system time is synchronized by some means not visible by xntpd. On an isolated network one might set the time manually from time to time. Together with a frequency adjustment available as a fudge factor (see the driver’s documentation) one may achieve an accuracy of a few seconds per week.
