I bought an Aluminum USB 3.0 to Ethernet Adapter from Anker and tried to connect it to my MBP Retina with macos 10.12.2
In the beginning it was able to connect to my Fritzbox (Router), but now after a few hours of workload it stopped working. I updated the driver from the Anker.com homepage, but to no avail. It's connected to a Fritzbox Powerlan Router which works perfectly fine with other devices.
It simply gets the wrong IP address from the DHCP server and I can change it manually, but it still doesn't work.