I'm a bit frustrated by frequent hangups of mac68k's sn(4) driver
on NFS root so I tried to make mac68k use the MI SONIC driver
(sys/dev/ic/dp83932.c), then it just works on Apple Ethernet
CS Twisted-Pair Card on my LC630 (sn0 at obio).

I've put a test kernel and diff here:

http://www.ceres.dti.ne.jp/~tsutsui/netbsd/netbsd-mac68k-MI-sonic-20070527.gz
http://www.ceres.dti.ne.jp/~tsutsui/netbsd/mac68k-MI-sonic-20070527.diff
(diff also includes non-sonic-related patches)

and I'd appreciate it if someone test it on NuBus based SONIC cards.
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Izumi Tsutsui