> Hi Uwe,
    > Uwe Brauer wrote:

Hi

Thanks for your answer

    > This network tool is tdenetworkmanager or something else? I assume yes.

Yes it is.


    > You could turn off network manager and try configuring the wired network
    > manually or via network/interfaces.


I tried this already, the problem is that in Kubuntu 14.04 things are
different, maybe caused my the switch to systemd.

In 10.4 and 12.04 I had in /etc a file resolv.conf which contained the
IP of the DNS server and in

/etc/network/interfaces

The static IP of the machine, the gateway etc.

Also the command

sudo /etc/init.d/networking restart

Restarted the network.

Now in 14.04 
resolv.conf -> ../run/resolvconf/resolv.conf

Which seems ok, but

sudo /etc/init.d/networking restart

Seems not to do anything.

In any case one problem is caused by the IPv6 protocol.

So I added the following line to my grub configuration
(/etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 quiet splash"

And rebooted, then tdenetworkmanager seemed to configure the network
correctly, but after rebooting the DNS server was deleted from
resolv.conf again, which is annoying.

Regards

Uwe