Subject: Re: idle timeouts from isp
To: Jukka Marin , Matthew <M@ML-Associates.co.uk>
From: Bill Sommerfeld <sommerfeld@orchard.arlington.ma.us>
List: port-i386
Date: 11/19/2001 21:35:00 
> ntpd will increase the poll interval to 1024 seconds after a while.  This
> may be too long to keep the connection open..

You can clamp this using the "maxpoll" option for the ntp peer.
"maxpoll 10" is the default (2**10 seconds).

see file:///usr/share/doc/html/ntp/confopt.htm

					- Bill