Your message dated Mon, 4 Jan 2010 00:14:02 +0000
with message-id <[email protected]>
and subject line Re: Bug#557003: libc6: DNS queries are extremely slowed by ipv6
has caused the Debian Bug report #557003,
regarding libc6: DNS queries are extremely slowed by ipv6
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
557003: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=557003
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libc6
Version: 2.10.1-7
Severity: important

When using Firefox, Google Chrome, Opera, Synaptic and other applications which 
use DNS, I always have to wait a long time (2 to 10 seconds) for a host to 
resolve (i.e. messages like "Resolving host", "Looking up http://whatever";, 
etc). 

I always thought that this was a problem of my internet connection. 
I could never track the origin of it until finally like 2 hours ago I stumbled 
across this:
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/417757

To test if I had this problem, I opened up Firefox and got to about:config, 
entered ipv6 and set "network.dns.disableIPv6" to false. Immediately, every DNS 
query was extremely fast and browsing was up to par to my high speed internet 
connection.
To do a definite test, I added "ipv6_disable=1" to my kernel command line and 
after that all the applications above were having much faster DNS queries.

This is a rather serious bug that I have been experiencing ever since upgrading 
to testing (right after lenny's release), and always blamed on my ISP/wireless 
connection/configuration/etc, while finding it strange that every Mac or 
Windows PC near me using the same connection appeared to be much faster on DNS 
queries.

I guess there must be much more users affected by this and like me, they have 
no clue why. 

It may be caused by a recent version of libc6, because the bug above is marked 
as "karmic regression" (the latest ubuntu is the karmic one, 9.10) and a friend 
of mine who is using lenny doesn't appear to have the same problem.

Pardon me if this as already been reported, I searched around but could not 
find a Debian version of this bug.


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing-proposed-updates
  APT policy: (500, 'testing-proposed-updates'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.31.6 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libc6 depends on:
ii  libc-bin                      2.10.1-7   GNU C Library: Binaries
ii  libgcc1                       1:4.4.1-4  GCC support library

Versions of packages libc6 recommends:
ii  libc6-i686                    2.10.1-7   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                       2.10.1-7   GNU C Library: National Language (

-- debconf information excluded



--- End Message ---
--- Begin Message ---
Hi,

I reinstalled my system (upgraded to amd64) and the problem seems to be gone.

It may be that my old system was rotting, or the problem is i386
specific. Either way, since nobody else complained, I'm closing this
bug.

Thank you for your patience and help.


--- End Message ---

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