[bitfolk] false positives from nagios for ntp services

Hi all, I have recently started receiving critical alerts from Nagios regarding the ntp service on my 2 VPS. On both, ntpd is functioning perfectly fine, and iptables has rules to allow traffic through on port 123, but /etc/ntp.conf contains: # and admin.curacao.bitfolk.com (nagios) restrict 212.13.194.71 It looks like the recent scheduled maintenance work caused the IP of admin.curacao.bitfolk.com to change, although I see that nagios.bitfolk.com still points to the old IP. Assuming that my diagnosis is correct, would it be possible to update the entry for nagios.bitfolk.com so that our ntp.conf files can refer to nagios.bitfolk.com rather than a hard-coded IP to prevent future reoccurrences? On a related note, is the nagios service is set up to check UDP or TCP or both? Thanks! Adam