> You're not getting responses back from __any__ of those NTP servers. If > you have a firewall *in front* of your BSD box (meaning a separate box, > not ipfw/ipfilter/pf on the same BSD box!), then this is likely the > cause of the problem. The question is that two weeks ago, with same machine, same gateway, same NAT and same firewall config, when I was on FreeBSD 6.2-RELEASE and behind NAT, I could sync with ALL IPv6 servers (IPv4 is not functioning there) I said that in my first post. I'm pretty sure that if I went back to 6.2 even behind NAT, I could get sync with IPv6. Long writing since my first post I shall summarize my events here for better understanding, and sorry for redundancy. 1. FreeBSD 5.4-RELEASE(dial up) - can sync all servers 2. FreeBSD 6.2-RELEASE(dial up) - can sync all servers 3. FreeBSD 6.2-RELEASE(NAT) - can sync IPv6 servers 4. FreeBSD 6.3-STABLE (NAT) - not sync at all The issue is the different result between 3. and 4. It seems something different between 6.2-RELEASE and 6.3-STABLE. But today I hear good news for issuance of 7.0-RELEASE. I shall go on with the new RELEASE. My bad news is I've just updated to 6.3 for 2 weeks. :-(
> If not, there's two explanations: > > * Your uplink provider is filtering incoming packets destined to your > network on port 123. It works with IPv6 on 6.2 behind NAT. So this reason might not be the case. IPv4 or IPv6 bind() the same port (123). In addition, I look in ntpdate/ntpd source code. They both use datagram socket (UDP). But only ntpd support AF_INET6 address family. So in my case ntpdate, which supports only IPv4, will never work on my system even on 6.2 behind NAT. > * If you're using NAT on this BSD box, somehow your NAT rules are > broken, or you're doing something bizarre with network interfaces. I'm not using BSD box as a router. > You also confirm this by stating that you're able to talk to NTP servers > if you use a dial-up connection on the same box, so it really sounds > like you have a NAT problem and not an NTP problem. Probably, but I'm not quite sure as my reason above. Thanks, Pongthep _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
