-get boot messages to NetBSD's standards (ie at least 3 lines)
-get some card information from PCI ID and subsystem ID
-fix media handling and link reporting for fiber cards
-port cksum offloading to NetBSD and enable as far as appropriate
(TCP/UDP transmit offloading still disabled, as in OpenBSD)
3Com 3C(R)990 cards. No TCP/UDP nor IPSEC offloading for now.
The ifmedia part needs some work, but I only have a 100-FX card;
hopefully someone will clean this up.