Comment 21 for bug 787551

Description of problem:
There is a regression in ntp in the latest version; communication with certain other time servers is really slow and would then be dropped before completion. See logs of the ntpdate -d with both p1 and p2 versions below. This affects Debian testing and Gentoo as well.

Debian report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599793
Gentoo report: http://bugs.gentoo.org/show_bug.cgi?id=329571

Version-Release number of selected component (if applicable):
ntp-4.2.6p2-7.fc14

How reproducible:
Always

Steps to Reproduce:
1. ntpdate -d 131.188.65.129 (unfortunately not available from outside)

Actual results:
Looking for host 131.188.65.129 and service ntp
host found : 131.188.65.129
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
131.188.65.129: Server dropped: no data
server 131.188.65.129, port 123
stratum 2, precision -24, leap 00, trust 000
refid [131.188.65.129], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time: d07bfebd.f851ee30 Wed, Nov 3 2010 16:31:09.970
originate timestamp: d07bff47.c624df50 Wed, Nov 3 2010 16:33:27.774
transmit timestamp: d07bff3d.a9463163 Wed, Nov 3 2010 16:33:17.661
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
delay 0.00000, dispersion 64.00000
offset 0.000000

 3 Nov 16:33:19 ntpdate[3893]: no server suitable for synchronization found

Expected results:
Looking for host 131.188.65.129 and service ntp
host found : 131.188.65.129
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
receive(131.188.65.129)
transmit(131.188.65.129)
server 131.188.65.129, port 123
stratum 2, precision -24, leap 00, trust 000
refid [131.188.65.129], delay 0.02696, dispersion 0.00131
transmitted 4, in filter 4
reference time: d07c02bd.f851ee30 Wed, Nov 3 2010 16:48:13.970
originate timestamp: d07c02ea.991688d0 Wed, Nov 3 2010 16:48:58.598
transmit timestamp: d07c02e0.84b5aed6 Wed, Nov 3 2010 16:48:48.518
filter delay: 0.02869 0.02727 0.02696 0.02783
         0.00000 0.00000 0.00000 0.00000
filter offset: 10.07619 10.07781 10.07629 10.07849
         0.000000 0.000000 0.000000 0.000000
delay 0.02696, dispersion 0.00131
offset 10.076294

 3 Nov 16:48:48 ntpdate[4149]: step time server 131.188.65.129 offset 10.076294 sec

Additional info: