Problem: you have a BSD box, like a m0n0wall and you need to force the ethernet media type. There’s no convenient GUI to do it.
Solution: get a command prompt (like /exec.php on m0n0wall) and do:
ifconfig $ADAPTER media $SPEED mediaopt $DUPLEX
ifconfig xl0 media 100baseTX mediaopt full-duplex
The actual syntax varies slightly on some drivers, so Google for ‘bsd man $DRIVERNAME’, e.g. xl.
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