This is the IBM/National PCMCIA ethernet driver from Keith Moore,

This is the IBM/National PCMCIA ethernet driver from Keith Moore,
based originally on work by David Greenman and adapted to FreeBSD
(and cleaned up a bit) by myself.  It supports the IBM Credit Card
Adapter for the IBM Thinkpad, and I've had no trouble making it work
on my Toshiba T1910 with a National `InfoMover' NE4100 PCMCIA ethernet
card (I'm commiting this message through it right now :-).

This is actually sneaking it in after feature-freeze, but it's just
too useful to pass up!  As always, necessity is a mother.