strange problems with Internet connection

[Lutzer]

Great! I disabled IPv6 in Firefox and until now it seems to work! Any
idea about Thunderbird; is Thunderbird using IPv6 and if so how to
disable it? Are tools like ping for example using IPv6 as well? Is there
a way to disable IPv6 system wide?

I'm wondering how much people do have the same problem. Maybe it would
be usefull to disable IPv6 by default?

Thanks alot!


Tod Merley schrieb:
> 
> 
> On 4/13/06, *Lutzer* <M.Lutzer at gmx.de <mailto:M.Lutzer at gmx.de>> wrote:
> 
>     I'm using Ubuntu Breezy on my MSI laptop which has an integrated Realtek
>     8139 Ethernet card. The Internet connection is realized through a
>     DSL-router which provides DHCP. After using the Internet for some time
>     (varys between some seconds and some hours) the resolving of DNS fails
>     regularly. Most of the time I can fix it immediately by executing
>     "dhclient eth0". After some time it fails again. ping to my router and
>     traffic without DNS quering (e.g. filesharing) works without problem.
> 
>     I guess it could be a Ubuntu specific problem because
>     1. Other Kubuntu and Windows PCs in the same network does not have any
>     such problem
>     2. I had the same problem with another laptop (IBM Thinkpad) at another
>     house, another network and another ISP but with Ubuntu Breezy (probably
>     Hoary as well)
> 
>     any ideas are welcome! Lutz
> 
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> 
> 
> Hi Lutz!
>  
> Try removing the DSL router from /etc/resolv.conf (just add a "#" to the
> beginning of the line (one character followed by a space if you wish --
> e.g. "# nameserver 192.168.0.1 <http://192.168.0.1>")).  Hopefully it is
> not the only one, if so  you would need to add a public nameserver to
> the file.
>  
> The issue is probably out of date firmware in the DSL router not
> handling IPv6 name qureies properly.  This simply routes around that as
> a test.
>  
> You can also turn on/of IPv6 DNS within Firefox.  Do an "about:config in
> the URL line and look in the networking section.
>  
> Good hunting!
>  
> Tod
>