Network Time Protocol (NTP) configuration 900 Network Time Protocol (NTP) server ipv4 IP address of NTP server ipv6 IPv6 address of NTP server hostname Fully qualified domain name of NTP server Marks the server as unused Associate with a number of remote servers Specifies the association as preemptable rather than the default persistent Marks the server as preferred Network Time Protocol (NTP) server options IP address ipv4net IP address and prefix length ipv6net IPv6 address and prefix length #include #include #include