Link: Flawed Security Update Kills Ethernet ☍

Shared on February 29, 2016

Apple:

If the Ethernet connection on your Mac stopped working recently, check System Information to find out which version of “Incompatible Kernel Extension Configuration Data” is installed. If you have version 3.28.1, you need an update. If you can connect to WiFi, your Mac will update to version 3.28.2 automatically, or you can follow the steps below to restore it manually.

Although this doesn’t appear to be widespread at all, it is a bit scary that Apple sent out an automatic update that kills Ethernet kernel extensions. The fix is pretty easy, but it could’ve been much worse if it were something like Wi-Fi or USB.

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