OK, so i connected the device to my pc and was able to controll it 
thanks for the tip @chrode
Now I know that the connections etc are OK.
Thats great, but I want to make it a part of the network, so i got to configure this with a fixed ip right?
Whatever I do, i can’t seem to control this over the standard ethernet network, only peer to peer over multicast.
You don’t need a fixed IP, but it can make things easier.
I would recommend you connect the bridge to your switch and check if the device shows up in your network (f.e. Router log). If so, you have to make sure that openHAB and the bridge are in the same subnet. If openHAB has set the local address for the bridge thing it should work.
If it not shows up in your Network check the blink codes of the bridge. You can select different settings by pressing the button for a defined time.(see instructions)
Strange, I’m in a 192.168.0.x network with a 255.255.255.0 sunet mask, no no fancy network here for the moment.
The device has ip 192.168.0.25 and i can ping it and visit the web interface but it doesn’t show up in my device list in my router.
The Blink code is 2 flahes what means static ip mode as i configured.
try dhcp and see what happens