Config file says?
# cat /etc/ntpd.conf # $OpenBSD: ntpd.conf,v 1.9 2008/10/10 11:46:22 sthen Exp $ # sample ntpd configuration file, see ntpd.conf(5) # Addresses to listen on (ntpd does not listen by default) listen on * # sync to a single server server yes server hora.roa.es # use a random selection of 8 public stratum 2 servers # see http://support.ntp.org/bin/view/Servers/NTPPoolServers #servers pool.ntp.org # use a specific local timedelta sensor (radio clock, etc) #sensor nmea0 # use any detected timedelta sensor #sensor * But be aware of that also: # ntpd -n configuration OK -- Thanks, Jordi Espasa Clofent

