[ntp:questions] NTS multicast response on IPv6
mayer at ntp.isc.org
Wed Jan 18 18:13:57 UTC 2006
Mauricio Schramm wrote:
> I'm trying to set up an NTP server that answers multicast requests from
> IPv6 clients without any success.
Please understand that is not how multicast works. The clients are
passive and only receive multicast packets from the server (modulo the
> I just don't know if the problem is with
> the client or with the server and I don't have a reliable test tool to make
> sure if any of them is correctly set. Does someone already tried this with
> success? I tried it with up to date Red Hat Linux and Free BSD and Open BSD
> servers and it never worked. Does someone know if I can use tools like ntpq
> to do my tests?
IPv4 and IPv6 multicast work in the latest ntp-dev release. Please note
however that you must set up authentication on both the client and the
server unless you explicitly disable authentication on the client.
> Do you know if something like that is supposed to work:
> ntpq -n -c rv ff05::101
> ntpq -n -c rv ff01::101
This is wrong. ntpq can only request information about a specific host.
More information about the questions