[Bug 417757] Re: [regression] all network apps / browsers suffer from multi-second delays by default due to IPv6 DNS lookups

[gene]

Unbelievable, this bug still manages to bug people on the latest and fully updated Ubuntu 11.04!
The strangeness of the situation is as follows:

ubuntu 11.04, uname -a:
Linux  3.0.0-mine #3 SMP Thu Jul 28 14:03:44 CDT 2011 i686 i686 i386 GNU/Linux

Where, with firefox 5.0, epiphany, chromium some websites take very long
time to load, while everything else involving connection is fast. E.g.,
w3m, lynx and especially elinks are extremely fast! At the same time
on!!!! On the

ubuntu 10.04:
 uname -a
Linux 2.6.35.13-mine #1 SMP Fri May 6 00:20:57 CDT 2011 x86_64 GNU/Linux
Exact same browsers are almost as fast as their text-based brethren.

So, IMHO, the problem resides not with the actual browser(s) but with something else.
This is getting ridiculous!

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https://bugs.launchpad.net/bugs/417757

Title:
  [regression] all network apps / browsers suffer from multi-second
  delays by default due to IPv6 DNS lookups

Status in “eglibc” package in Ubuntu:
  Triaged
Status in “network-manager” package in Ubuntu:
  Invalid
Status in “eglibc” source package in Lucid:
  Triaged
Status in “network-manager” source package in Lucid:
  Invalid
Status in “eglibc” source package in Karmic:
  Fix Released
Status in “network-manager” source package in Karmic:
  Invalid
Status in “glibc” package in Fedora:
  Confirmed

Bug description:
  In Karmic, DNS lookups take a very long time with some routers,
  because glibc's DNS resolver tries to do IPv6 (AAAA) lookups even if
  there are no (non-loopback) IPv6 interfaces configured. Routers which
  do not repond to this cause the lookup to take 20 seconds (until the
  IPv6 query times out).

  *** PLEASE DO NOT COMMENT ON THIS BUG unless you have something
  constructive to say. Everything that can be said has already been
  said, and if you comment, you are just adding noise. Please let those
  that actually know what they are doing concentrate on fixing this bug
  from now on. ***

  If disabling IPv6 or using good DNS servers like openDNS fixes the
  problem, you are not dealing with this bug. Please refrain from
  complaining here in that case

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