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Bug#552010: libc6: After upgrade many applications become unusable



Package: libc6
Version: 2.10.1-1
Severity: critical

After upgrade to libc6 2.10.1-1 many applications become unusable.
For example:

,----[ sudo aptitude update ]
Err http://ftp.us.debian.org sid Release.gpg
  Could not resolve 'ftp.us.debian.org'
Ign file: apt-build Release.gpg
Get:1 file: apt-build Release [89B]
Ign file: apt-build/main Packages
Ign file: apt-build/main Packages
Reading package lists...
Building dependency tree...
Reading state information...
Reading extended state information...
Initializing package states...
Reading task descriptions...
Deleting obsolete downloaded files
`----

,----[ ping ftp.us.debian.org ]
ping: unknown host ftp.us.debian.org
`----

Many other applications including postfix and Iceweasel failed
similarly.

But: x

,----[ dig +shor ftp.us.debian.org. @127.0.0.1 ]
204.152.191.39
35.9.37.225
64.50.236.52
128.30.2.36
149.20.20.135
`----

Yet:

,----[ dig +shor puck.nether.net. @204.42.254.5 ]
204.42.254.5
`----
,----[ dig +shor puck.nether.net. @puck.nether.net. ]
dig: couldn't get address for 'puck.nether.net.': not found
`----

After downgrading libc-bin libc-dev-bin libc6 libc6-dev libc6-i686
locales to version 2.9-25 as follows all appears to be normal again.

-----
        #cat >>/etc/apt/sources.list
        deb http://35.9.37.225/debian/ sid main non-free contrib
        deb-src http://35.9.37.225/debian/ sid main non-free contrib
        deb http://35.9.37.225/debian/ testing main
        deb-src http://35.9.37.225/debian/ testing main
        ^D
        #aptitude update; aptitude install libc6/testing
-----

This would have been more difficult without dig. :))

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-2-686 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash

Versions of packages libc6 depends on:
ii  libc-bin                      2.10.1-1   GNU C Library: Binaries
ii  libgcc1                       1:4.4.2-1  GCC support library

Versions of packages libc6 recommends:
ii  libc6-i686                    2.10.1-1   GNU C Library: Shared libraries [i

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]         1.5.28     Debian configuration management sy
pn  glibc-doc                     <none>     (no description available)
ii  locales                       2.10.1-1   GNU C Library: National Language (

-- debconf information:
  glibc/upgrade: true
  glibc/disable-screensaver:
  glibc/restart-failed:
* glibc/restart-services: cron



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