Public bug reported:
Sometimes the output from check_ntp_time is Offset unknown while the ntp
server is fine.
It can stay like that for a while and then comes back to normal.
Here's a sample output while the problem was present on the server:
root@server:~#
This is happening on hardy and not lucid:
root@server:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 8.04.4 LTS
Release:8.04
Codename: hardy
root@server:~# dpkg -l|grep nagios-plugins
ii nagios-plugins-basic