[pkg-ntp-maintainers] Bug#654699: squeeze: ntpdate & ntpd cannot synchronize from a Win2008 R2 ntp server

[Mathieu Simon]

Package: ntp
Version: 1:4.2.6.p2+dfsg-1+b1
Severity: important


Dear ntp maintainers

I realized the current ntpd and ntpdate in squeeze cannot successfuly synchronize 
against ntp servers running on Windows 2008 R2 (at least from what I can check against).
This applies to both ntpd and ntpdate.

Regular squeeze, here using ntpdate:
root@<foo>:~# ntpdate -v pulsar
 5 Jan 11:13:10 ntpdate[6636]: ntpdate 4.2.6p2 at 1.2194-o Sun Oct 17 13:35:14 UTC 2010 (1)
 5 Jan 11:13:18 ntpdate[6636]: no server suitable for synchronization found

Manually compiled next upstream release:
root@<foo>:/usr/src/ntp-4.2.6p3/ntpdate# ./ntpdate -v pulsar
 5 Jan 11:28:17 ntpdate[21156]: ntpdate 4.2.6p3 at 1.2290-o Thu Jan  5 10:26:35 UTC 2012 (1)
 5 Jan 11:28:25 ntpdate[21156]: adjust time server 86.118.145.7 offset -0.007117 sec

Thus current testing shouldn't be affected (4.2.6.p3+dfsg-1)
Quite elder versions like in Ubuntu lucid (4.2.4p8) don't show this problem either.

Unfortunately looking at upstream changelog didn't give me enough clue to locate the 
changes that fixed the bug upstream.

--Mathieu

-- System Information:
Debian Release: 6.0.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/1 CPU core)
Locale: LANG=de_CH.UTF-8, LC_CTYPE=de_CH.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages ntp depends on:
ii  adduser                 3.112+nmu2       add and remove users and groups
ii  dpkg                    1.15.8.11        Debian package management system
ii  libc6                   2.11.2-10        Embedded GNU C Library: Shared lib
ii  libcap2                 1:2.19-3         support for getting/setting POSIX.
ii  libedit2                2.11-20080614-2  BSD editline and history libraries
ii  libopts25               1:5.10-1.1       automated option processing librar
ii  libssl0.9.8             0.9.8o-4squeeze4 SSL shared libraries
ii  lsb-base                3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii  netbase                 4.45             Basic TCP/IP networking system

Versions of packages ntp recommends:
ii  perl                   5.10.1-17squeeze2 Larry Wall's Practical Extraction 

Versions of packages ntp suggests:
pn  ntp-doc                       <none>     (no description available)

-- Configuration Files:
/etc/ntp.conf changed [not included]

-- no debconf information