When I connect a USB ethernet adapter, a new network interface appears at ue0. Unfortunately there doesn't seem to be a man page in section 4 for this device driver. It needn't be any more than a basic stub following the format of man pages for other ethernet drivers. I was hoping to confirm whether different media types were supported because I only got 10baseT out if the (admittedly old) USB adapter. A list of supported hardware could be useful in general.