NAME
	  ntptrace - trace a chain of NTP hosts	back to	their master
	  time source

     SYNOPSIS
	  ntptrace [ -vdn ] [ -r retries ] [ -t	timeout	] [ server ]

     DESCRIPTION
	  Ntptrace determines where a given Network Time Protocol
	  (NTP)	server gets its	time from, and follows the chain of
	  NTP servers back to their master time	source.	 If given no
	  arguments, it	starts with ``localhost.''

	  Here is an example of	the output from	ntptrace:

	    % ntptrace
	    localhost: stratum 4, offset 0.0019529, synch distance 0.144135
	    server2.bozo.com: stratum 2, offset	0.0124263, synch distance 0.115784
	    usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB'

	  On each line,	the fields are (left to	right):	the host name,
	  the host's stratum, the time offset between that host	and
	  the local host (as measured by ntptrace; this	is why it is
	  not always zero for ``localhost''), the host's
	  ``synchronization distance,''	and (only for stratum-1
	  servers) the reference clock ID.  All	times are given	in
	  seconds.  (Synchronization distance is a measure of the
	  goodness of the clock's time.)

     OPTIONS
	  -d   Turns on	some debugging output.

	  -n   Turns off the printing of host names; instead, host IP
	       addresses are given.  This may be necessary if a
	       nameserver is down.

	  -r retries
	       Sets the	number of retransmission attempts for each
	       host; default = 5.

	  -t timeout
	       Sets the	retransmission timeout (in seconds); default =
	       2.

	  -v   Prints verbose information about	the NTP	servers.

     SEE ALSO
	  xntpd(8), xntpdc(8)

     BUGS
	  This program makes no	attempt	to improve accuracy by doing
	  multiple samples.