[pkg-ntp-maintainers] Bug#535049: ntpd does not work (removes every server) when no network at boot time

[Vincent Lefevre]

Package: ntp
Version: 1:4.2.4p6+dfsg-2
Severity: normal

When ntpd starts while Internet connection is not up yet (this happens
when using wifi after the user has logged in), all the servers are
removed, so that ntpd no longer works. For instance, the syslog file
shows:

Jun 29 09:07:23 xvii ntpd[3868]: ntpd 4.2.4p6 at 1.1549-o Fri Jun 12 15:39:51 UTC 2009 (1)
Jun 29 09:07:23 xvii ntpd[3869]: precision = 1.000 usec
Jun 29 09:07:23 xvii ntpd[3869]: Listening on interface #0 wildcard, 0.0.0.0#123 Disabled
Jun 29 09:07:23 xvii ntpd[3869]: Listening on interface #1 wildcard, ::#123 Disabled
Jun 29 09:07:23 xvii ntpd[3869]: Listening on interface #2 lo, ::1#123 Enabled
Jun 29 09:07:23 xvii ntpd[3869]: Listening on interface #3 lo, 127.0.0.1#123 Enabled
Jun 29 09:07:23 xvii ntpd[3869]: kernel time sync status 0040
Jun 29 09:07:23 xvii kernel: [   31.080545] ADDRCONF(NETDEV_UP): wlan0: link is not ready
Jun 29 09:07:23 xvii ntpd[3869]: frequency initialized 0.510 PPM from /var/lib/ntp/ntp.drift
Jun 29 09:07:23 xvii named[3498]: network unreachable resolving '0.debian.pool.ntp.org/AAAA/IN': 193.0.14.129#53
Jun 29 09:07:23 xvii named[3498]: network unreachable resolving '0.debian.pool.ntp.org/A/IN': 193.0.14.129#53
[...]
Jun 29 09:07:25 xvii ntpd_initres[3886]: host name not found: 0.debian.pool.ntp.org
Jun 29 09:07:25 xvii ntpd_initres[3886]: couldn't resolve `0.debian.pool.ntp.org', giving up on it

and ditto with the other 3 servers. The consequence:

xvii:~> ntpq -p
No association ID's returned

After restarting ntpd with "/etc/init.d/ntp restart":

xvii:~> ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ddb3.europeacon 193.49.205.18    2 u    -   64    1   40.697  -4440.1   0.582
 ovh.microkwen.c 195.13.23.5      3 u    2   64    1   41.073  -4436.8   0.706
 dnscache-paris. 192.93.2.20      2 u    1   64    1   50.454  -4441.3   0.836
 ns.gansta93.com .STEP.          16 u  771   64    0    0.000    0.000   0.001

ntp should probably have a script in /etc/network/if-up.d to restart
ntpd or something like that.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.29-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages ntp depends on:
ii  adduser                  3.110           add and remove users and groups
ii  libc6                    2.9-13          GNU C Library: Shared libraries
ii  libcap2                  1:2.16-5        support for getting/setting POSIX.
ii  libedit2                 2.11-20080614-1 BSD editline and history libraries
ii  libncurses5              5.7+20090523-1  shared libraries for terminal hand
ii  libssl0.9.8              0.9.8k-3        SSL shared libraries
ii  lsb-base                 3.2-22          Linux Standard Base 3.2 init scrip
ii  netbase                  4.35            Basic TCP/IP networking system

Versions of packages ntp recommends:
ii  perl                          5.10.0-23  Larry Wall's Practical Extraction 

Versions of packages ntp suggests:
ii  ntp-doc                 1:4.2.4p6+dfsg-2 Network Time Protocol documentatio

-- no debconf information