Alright so i just mounted it and copied the kext should i restart now?
I have the same problem with e2200 after installing sierra macOS. Does the solution suggested work?Yes, you'll have to restart to load the "new" kext (and unload the old one). And I know you'll hate to hear this, but this isn't a guaranteed solution - just something that I think might fix your problem.
Thanks so much for this. I had the same issue - ethernet worked on initial boot from installer, but stopped after Multibeast (and also b0rked ethernet on my Win 7 partition - how did it manage that?). I used the chown solution.