First of all, sorry for not being better with informations, bu I have literally no idea what is wrong here, and thus no idea what data to post.
I have had a server running for some time now without problems, but after having it moved it suddenly will no longer connect to the network.
I am using the exact same setup as before (including cabels) but clearly something broke.
The server is running Ubuntu server 18.04.1 and have this board https://www.supermicro.com/products/motherboard/atom/x10/a1sri-2758f.cfm
So. What info do I need to post to make this question answerable?