I have some ethernet cards to test, and have no luck with Xircom RealPort
Ethernet 10 RE-10 card. It probes as "Xircom CreditCard 10/100 Ethernet"
with xi0 at pcmcia0. xi(4) does mention that the RealPort "should work, but"
has "not been confirmed". The problem is

# ifconfig -m xi0
xi0: flags=...
	media: Ethernet autoselect (none)
	supported Ethernet media:
		media autoselect

This might be a red herring:

cbb0: bad Vcc request. soc_ctrl 0x0, sock_status 0x30000710
cbb0: bad Vcc request. soc_ctrl 0x22, sock_status 0x30000710
etc.

Any thoughts on what to tweak?

Cheers,

Patrick