[CentOS] NTP problems

Olaf Mueller daily-planet at istari.de
Sat Nov 15 10:41:14 UTC 2008

Anne Wilson wrote:


>  **Unmatched Entries**
>    sendto( (fd=21): Invalid argument: 1 time(s)
>    sendto( (fd=21): Invalid argument: 1 time(s)
> Does this mean that ntp is failing?  I assume so, and if so, how do I
> change the sources to something that will work?
Does this happens after a reconnect with your provider and getting a new
ip address?
If so, then yes. I have had this problem also a long time ago. The
following command works for me in /etc/ppp/ip-up.local.

# restart time service cause of new ip from provider
/etc/rc.d/init.d/ntpd restart


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