Comment 101 for bug 417757

On Tue, Nov 03, 2009 at 06:39:06PM -0000, Michael Hasenstein wrote:
> Also, I disabled IPv6 in grub (ipv6.disable=1) and while it helps
> Firefox (I re-enabled ipv6 in Firefox and it still worked) it did NOT
> help other applications: my ssh connection to a server on the Internet
> takes a loooooong time, but when I use "ssh -4" (tell ssh to use ipv4
> only) it's immediate. AFTER I DISABLED IPV6?!
>
> So the case is NOT as simple as some people want to make us believe, and
> it certainly is NOT a problem "of your router" (i.e. mine). See above.

It's a problem with the nameserver on the router, not with the router
itself. If the libc does AAAA requests that are not properly answered
which it doesn't when you force it to (through -4) that's hardly the
fault of the C lib.

> I've been "doing Linux" since 1995, I even did kernel development
> (networking/firewall/network address translation) up to kernel 2.4. And
> I say this is a bug in Ubuntu!!! Okay, any number of exclamation marks,
> i.e. yelling, does not make me any more right, but... oh well.
>
> But who cares, the only reason I'm still here is that SuSE's and
> Fedora's new releases are still two weeks away.

Oh great. Rest assured that I experienced the same problem with Fedora, too.

Kind regards,
Philipp Kern