ntpstat - 0.0.0.1-2+b1 main

This program uses an NTP mode 6 control message, which is the same as that
used by the ntpq command. The ntpdc command uses NTP mode 7, details of
which are elusive. For details on the format of NTP control message, see
http://www.eecis.udel.edu/~mills/database/rfc/rfc1305/rfc1305b.ps.