ntp:
  server:
    enabled: true
    logfile: '/var/log/ntp.log'
    mode7: true
    orphan: 5
    peers:
    - host: 192.168.31.1
    - host: 192.168.31.2
    - host: 192.168.31.3
    restrict:
    - mask: 255.255.255.0
      subnet: 192.168.0.1
    - mask: 255.255.0.0
      options: notrap nomodify
      subnet: 172.16.1.1
    strata:
    - ntp.cesnet.cz
    - pool.ntp.org