Disabling IPv6

Matt Zimmerman mdz at canonical.com
Mon Nov 1 07:12:41 UTC 2004

On Mon, Nov 01, 2004 at 08:17:12AM +0200, Craig Adams wrote:

> On Sun, 2004-10-31 at 20:11 -0800, Matt Zimmerman wrote: 
> > I should also mention that disabling ipv6 is really not the correct
> > solution, and I would very much like to know why it seems to cause problems
> > for some people, so that it can be fixed properly if possible.
> The main reason for me was that name resolution took way too long in
> Firefox, Evolution and gftp to the point that it would often timeout.
> I tried various things, including using different DNS servers, but nothing
> worked until I disabled IPv6.
> After disabling IPv6, my name resolution was working as expected.
> I know that this does not provide technical detail, but let me know what
> you want, and I can revert my config for testing.

This much I have heard, but as far as I know, no one has traced the cause.
I have never had any such problem.  I use an Ubuntu system running bind9 as
my nameserver; before that, the same system ran Debian and bind9.

If someone who can reproduce this problem would run:

strace -o /tmp/ipv6-resolv.text host www.ubuntu.com

(or whatever hostname can trigger the problem) and send a copy of the
resulting /tmp/ipv6-resolv.text, that might shed some light on the

 - mdz

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