Date: Wed, 12 Dec 2001 10:53:11 -0500 From: The Anarcat <anarcat@anarcat.dyndns.org> To: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: ntpdate works, ntpd does not Message-ID: <20011212155310.GB65642@shall.anarcat.dyndns.org>
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Hi
I've been struggling with a particularly painful problem with my ntpd
here. I am able to adjust the clock using "ntpdate" without any
problems:
# ntpdate time.nist.gov
12 Dec 10:40:57 ntpdate[1152]: adjust time server 192.43.244.18 offset -0.059697 sec
#
but ntpd always fails. From tcpdump, I can see it communicating with the
server, but just once. Here is the showpeer output:
ntpdc> showpeer time.nist.gov
remote 192.43.244.18, local 6.0.0.0
hmode client, pmode unspec, stratum 16, precision -20
leap 11, refid [0.0.0.0], rootdistance 0.00000, rootdispersion 0.00000
ppoll 10, hpoll 6, keyid 0, version 4, association 43316
valid 0, reach 000, unreach 1, flash 0x0000, boffset 0.00400, ttl/mode 0
timer 0s, flags config, bclient
reference time: 00000000.00000000 Thu, Feb 7 2036 1:28:16.000
originate timestamp: 00000000.00000000 Thu, Feb 7 2036 1:28:16.000
receive timestamp: 00000000.00000000 Thu, Feb 7 2036 1:28:16.000
transmit timestamp: bfc1f728.6a9984a0 Wed, Dec 12 2001 10:32:56.416
filter delay: 0.00000 0.00000 0.00000 0.00000
0.00000 0.00000 0.00000 0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
0.000000 0.000000 0.000000 0.000000
filter order: 7 6 5 4
3 2 1 0
offset 0.000000, delay 0.00000, error bound 0.00000, filter error 4.00000
Here is the tcpdump output I get:
10:45:57.912825 MTL-HSE-ppp191859.qc.sympatico.ca.ntp > time.nist.gov.ntp: v4 client strat 0 poll 6 prec -20 [tos 0x10]
10:45:58.084038 time.nist.gov.ntp > MTL-HSE-ppp191859.qc.sympatico.ca.ntp: v4 server strat 1 poll 6 prec -18 [tos 0x10]
I pay a beer to anyone passing through montreal and solving this thing,
as it's getting me completly mad.
Note that I am behind NAT+ipfw. But I kinda opened the rules to run my
tests... :) Anyways, the packets *are* coming to and fro, both with
ntpdate and ntpd.
a.
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