strange problems with Internet connection

[Tod Merley]

On 4/13/06, Lutzer <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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> ubuntu-users at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>

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")).  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The issue is probably out of date firmware in the DSL router not handling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
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