[RndTbl] *BSD and PCMCIA networking

[Glen Ditchfield]

Just for the heck of it, I installed NetBSD 1.6 on an old laptop.
(12MB RAM - not even enough to run Red Hat 6.2's installer!)
I've configured it to network through a PCMCIA ethernet card, using
DHCP, and it seems to work fine after booting.
   But then, if I eject the card and reinsert it, the network breaks.
Ping gives the message "sendto: no route to host".  I can fix this by 
manually restarting the DHCP client.  
   I'd like this done automatically.  I've looked around, but I don't
see any way to configure what happens during card ejection and insertion
events.  Am I missing something?
   Do the other BSD variants handle PCMCIA differently?