Been having this and a slow wifi issue with a Broadcom wifi recently.
So with MultiBeast 9.1 I installed the kexts for the two Ethernet ports. Now, Sierra does see the ports, but I can switch my cable between the ports all day long and no connection.
The ports show up as en0 and en1 and show a different Mac address as well. I trashed network and prefs and rebooted, but still no luck, should I trash again and reboot again?
So with MultiBeast 9.1 I installed the kexts for the two Ethernet ports. Now, Sierra does see the ports, but I can switch my cable between the ports all day long and no connection.
The ports show up as en0 and en1 and show a different Mac address as well. I trashed network and prefs and rebooted, but still no luck, should I trash again and reboot again?