I have some strange network problems on my new macBook pro. I can't connect my client software to my server. I can map the server, go on the internet etc. I the Network preferences Advanced-Hardware tab there isn't any Mac Address. If I connect to the network with wifi there is a mac address in the hardware tab and my client can connect to the server on the local network. Help me god dammit. As mentioned in the title of this post I connect to the Lan via a Thunderbolt go gigabit network adapter.