[ntp:questions] help needed for ntpd ipv6 setup

joan lee joan2006us at yahoo.com
Mon Nov 8 21:44:40 UTC 2010


I have two linux PCs, both running fedora 11 with NTP ver. 4.2.4p7.
PC1 has 192.168.1.1 and 2002::c0a9:0101 addresses
PC2 has 192.168.1.2 and 2002::c0a9:0102 addresses

ntpd is running on PC1.

on PC2 ntpdate 192.168.1.1 returned good timing from PC1
But ntpdate 2002::c0a9:0101 did not work

Wireshark runs on PC1 shows NTP client messages from 2002::c0a9:0102 are received properly, but instead of replying with NTP server messages, PC1 is sending ICMPV6 unreachable (administratively prohibited) messages.

Yet from PC1 ping6 2002:c0a9:0102 works fine.

On PC1 ntpdate -u 2002::c0a9:0101 also works via loopback interface.

Could anybody gives me some hint on why NTPD ignores the IPv6 NTP client messages?

Thanks,
Joan


      



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