Uwe Brauer wrote:
> 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.

I missed the start of this thread so my answer may be clueless. In
Jessie (and other systemd OS's?), static IP and DNS have moved to
/etc/dhcpd.conf. All I did to setup this machine was to add the
following to the bottom of dhcpd.conf:

interface eth0
static ip_address=192.168.0.8/24
static routers=192.168.0.1
static domain_name_servers=208.67.222.222 8.8.8.8

...I hadn't tried "service networking restart", which generates a
warning. While networking was fine at this point, I ran the suggested
command which had no visible affect (networking still fine).