[ntp:questions] XFAC (?)

Uwe Klein uwe_klein_habertwedt at t-online.de
Wed May 12 20:18:54 UTC 2010

Dave Hart wrote:
> On Wed, May 12, 2010 at 04:20 UTC, Laurent Archambault wrote:
>>After many search, i has not find my answer, whay do it mean the status
>>"XFAC" (?).
> ntpd resets associations when the local network interface (or, really,
> IP address) being used for that peer goes away.  This means the clock
> filter register of 8 samples is cleared, as are all other timekeeping
> stats related to the peer.  At that time, the "reference ID" or refid
> is changed to XFAC to indicate the cause of the cleared (reset)
> association.  Typically, that XFAC refid is replaced on receipt of the
> next packet from the server or peer.
> Since you ask what it means without telling us what problem you are
> having, I'm left supposing you are asking because it is not
> short-lived in your case.  You may be able to work around the problem
> by adding -U0 to the ntpd command line so that local network
> interfaces (IP addresses) are enumerated by ntpd only once at startup.
> Cheers,
> Dave Hart
Hi Dave,

so XFAC stands for
X Inter
F Face
A Association
c Change

Does this only happen on interface down/change or at ntp bootup too ?


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