[time-nuts] Leap second glitches on NTP using Z3801A

[Scott Mace]

Yes, I noticed this as well and modified the refclock driver to filter
it as it does in the oncore refclock.

	Scott

Hal Murray wrote:
> Is anybody running ntpd with their Z3801A?
> 
> If so, please check your log files and tell me if you see a bogus leap second 
> at the end of the past several months.  I've seen them for Aug, Sep, and Oct. 
>  I think they are coming from my Z3801A, but it might be something else.
> 
> The GPS satellites are now announcing a leap second that will happen at the 
> end of the year.   The refclock driver passes that to ntpd and ntpd passes it 
> to the kernel and magic happens.
> 
> I think the refclock-ntpd interface assumes the leap second will happen at 
> the end of the current month.  NIST only announces leap seconds a month ahead 
> on WWVB and ACTS.
> 
> The Oncore refclock driver has a filter to wait until the current month to 
> pass the info to ntpd.  I'm working on something similar for the HP driver.
>