[ntp:questions] zeroconf for ntpd?

Steve Kostecke kostecke at ntp.isc.org
Wed May 23 13:57:37 UTC 2007

Wolfgang S. Rupprecht wrote:

> Some mode that uses multicast for the timekeeping itself seems to me
> would be the lowest impact way to serve the millions of home systems.
> It just seems too tantalizing to pass up.

There are a few things to consider about Multicast:

1. Multicast associations can not compensate for changing network
conditions at each poll.

2. Muticast clients must use NTP authentication if they wish to control
which multicast servers they will accept. This requirement impacts
the autonomous configuration aspect of multicast (or manycast, for that

Steve Kostecke <kostecke at ntp.isc.org>
NTP Public Services Project - http://ntp.isc.org/

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