[ntp:questions] Transparent NTP in-node forwarding

Jiri Hlusi jiri.hlusi at nokia.com
Fri May 27 05:07:47 UTC 2005

> On 2005-05-27, Danny Mayer <mayer at gis.net> wrote:
> > At 04:44 AM 5/26/2005, Jiri Hlusi wrote:
> >
> >>NTPD seems to bind to all available IP interfaces at its startup,
> >>and there is no chance to change this later. Hence, in case that
> >>the Virtual IP is introduced *after* local ntpd is started (due to
> >>whatever reason), the only way to make ntpd to use it is to restart
> >>the daemon as such. That's something I wouldn't like to do .....
> >
> > See bug #51 in bugzilla. This won't be fixed anytime soon. It doesn't
> > take much to restart ntpd so why not do it for your situation?
> If your ntpd has been able to create a drift file _and_ you are using
> iburst on your server lines, an ntpd restart takes ~15 seconds to
> achieve sync.
> What Jiri is talking about sounds alot like the ntpd vs dhcp issue. The
> best solution is to run your local master ntpd on a system behind the
> system with the dynamic interface. This insulates your local master ntpd
> from the IP address changes on that dynamic interface and, if you're
> using NAT without port-forwarding, prevents outsiders from contacting
> your local master ntpd.

Thanks a lot, guys.

After all, restartiung the daemon might not cause as much troubles indeed.
Certainly I'll try the iburst option first and see...

-- Jiri

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