I just dug my old Mac IIsi out of the closet in hopes of getting NetBSD 
running on it. Install went fine. Boot messages show sn0 as a DaynaPORT 
E/si and correctly show the MAC address. Any attempt to ifconfig the 
interface resutls in a complete hang requiring a power cycle. I tried it 
with /etc/ifconfig.sn0 as well as a manual
ifconfig sn0 inet 192.168.1.9 netmask 255.255.255.0
same results. By the way the network works fine from MacOS.
What to do?
Thanks,
Paul