[pkg-ntp-maintainers] Bug#409170: ntp does not react to multicast or broadcast ntp packets

Joerg Dorchain joerg at dorchain.net
Wed Jan 31 11:55:51 UTC 2007

Package: ntp
Version: 1:4.2.2.p4+dfsg-1

This package is running on a time server configured to send out
multicast time informformation via broadcast ttl 1

They arrive at a client (tcpdump shows it, strange enough with a ttl of
32), but it does not react to it.

The client uses the supplied ntp.conf, with server statements commented
out and

disable auth

as last lines.

netstat -g does not show a multicast group membership, and an lsof does
not show an open multicast socket of ntpd.

Replacing the on the server with the network broadcast address
and replacing multicastclient with broadcastclient on the client does
not change the behaviour.

Kind regards,

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