Package: ntp-server
Version: 1:4.2.0a+stable-2sarge1
Severity: important
When ntpd polls 69.17.7.16, it starts polling once per second, which is
clearly an unacceptable poll rate. This might be due to the invalid
responses the server is sending which has an invalid peer polling
interval of 0. The Debian default configuration, with the servers
changed to include 69.17.7.16 reproduce this issue. [I didn't have the
local clock in, and had {0,1,2}.us.pool.ntp.org in]
For the following packet trace, 172.16.1.31 is the local side and
69.17.7.16 is the remote side. Thus, the first packet is a query; the
second is a response:
No. Time Source Destination Protocol Info
1 0.000000 172.16.1.31 69.17.7.16 NTP NTP
Frame 1 (90 bytes on wire, 90 bytes captured)
Ethernet II, Src: 00:30:48:76:86:da, Dst: 00:90:7f:04:cb:83
Internet Protocol, Src Addr: 172.16.1.31 (172.16.1.31), Dst Addr: 69.17.7.16
(69.17.7.16)
User Datagram Protocol, Src Port: ntp (123), Dst Port: ntp (123)
Network Time Protocol
Flags: 0x23
00.. .... = Leap Indicator: no warning (0)
..10 0... = Version number: NTP Version 4 (4)
.... .011 = Mode: client (3)
Peer Clock Stratum: secondary reference (2)
Peer Polling Interval: 7 (128 sec)
Peer Clock Precision: 0.000001 sec
Root Delay: 0.0827 sec
Clock Dispersion: 0.0141 sec
Reference Clock ID: 207.145.113.114
Reference Clock Update Time: Dec 19, 2005 17:46:40.8511 UTC
Originate Time Stamp: Dec 19, 2005 17:51:10.7650 UTC
Receive Time Stamp: Dec 19, 2005 17:51:10.7822 UTC
Transmit Time Stamp: Dec 19, 2005 17:51:13.7451 UTC
0000 00 90 7f 04 cb 83 00 30 48 76 86 da 08 00 45 10 .......0Hv....E.
0010 00 4c 02 af 40 00 40 11 3e 92 ac 10 01 1f 45 11 [EMAIL
PROTECTED]@.>.....E.
0020 07 10 00 7b 00 7b 00 38 f9 99 23 02 07 ec 00 00 ...{.{.8..#.....
0030 15 2d 00 00 03 9b cf 91 71 72 c7 51 70 80 d9 e3 .-......qr.Qp...
0040 fb bd c7 51 71 8e c3 d7 60 00 c7 51 71 8e c8 3e ...Qq...`..Qq..>
0050 31 93 c7 51 71 91 be bf fc da 1..Qq.....
No. Time Source Destination Protocol Info
2 0.037086 69.17.7.16 172.16.1.31 NTP NTP
Frame 2 (90 bytes on wire, 90 bytes captured)
Ethernet II, Src: 00:90:7f:04:cb:83, Dst: 00:30:48:76:86:da
Internet Protocol, Src Addr: 69.17.7.16 (69.17.7.16), Dst Addr: 172.16.1.31
(172.16.1.31)
User Datagram Protocol, Src Port: ntp (123), Dst Port: ntp (123)
Network Time Protocol
Flags: 0x24
00.. .... = Leap Indicator: no warning (0)
..10 0... = Version number: NTP Version 4 (4)
.... .100 = Mode: server (4)
Peer Clock Stratum: secondary reference (2)
Peer Polling Interval: invalid (0)
Peer Clock Precision: 0.015625 sec
Root Delay: 0.0403 sec
Clock Dispersion: 0.0141 sec
Reference Clock ID: 192.5.41.40
Reference Clock Update Time: Dec 19, 2005 17:50:44.7940 UTC
Originate Time Stamp: Dec 19, 2005 17:51:13.7451 UTC
Receive Time Stamp: Dec 19, 2005 17:51:13.7645 UTC
Transmit Time Stamp: Dec 19, 2005 17:51:13.7645 UTC
0000 00 30 48 76 86 da 00 90 7f 04 cb 83 08 00 45 00 .0Hv..........E.
0010 00 4c 00 00 00 00 75 11 4c 51 45 11 07 10 ac 10 .L....u.LQE.....
0020 01 1f 00 7b 00 7b 00 38 ef 63 24 02 00 fa 00 00 ...{.{.8.c$.....
0030 0a 52 00 00 03 9b c0 05 29 28 c7 51 71 74 cb 44 .R......)(.Qqt.D
0040 e8 00 c7 51 71 91 be bf fc da c7 51 71 91 c3 b4 ...Qq......Qq...
0050 a0 00 c7 51 71 91 c3 b6 80 00 ...Qq.....
-- System Information:
Debian Release: 3.1
APT prefers stable
APT policy: (500, 'stable'), (99, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-2-686-smp
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages ntp-server depends on:
ii ntp 1:4.2.0a+stable-2sarge1 Network Time Protocol: network uti
ii ntp-simple 1:4.2.0a+stable-2sarge1 Network Time Protocol: daemon for
ntp-server recommends no packages.
-- no debconf information
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