I am having problems with ethernet, the sbc was connected to 100 mbps network and it worked normally, but recently i relocated it and connected it to another cable, the problem is that now i only get 10mbps, the cable is ok because it tried in my pc and got 100mbps, but i only get 10mbps on the sbc, then i found how to fix this in settings, but i acidentally removed ethernet connection that i was using and now the ethernet doesn't work, do i have to change something in network interfaces? also it says no link detected

 

I tried sudo /etc/init.d/networking start and got an error which is in the picture, i'm pretty sure that's why the ethernet doesn't work but i don't know what the error says it's wrong or what should i do