And it probably worked much better in the day than when I tried it:
http://www.vintagemacworld.com/512Knet.html
Ah, thanks for that. I had forgotten about Phil's page and there's a ton of good stuff on there.
The downside for a 68K mac version is that the machines that would benefit most (the 68000 compacts) all lack ethernet and EN/SC devices aren't exactly falling from the trees.
Ah, for a time machine. There was a period of a few months during which one Ebay seller was offering the EN/SC devices for about $10 and no one was buying them. He must have had at least ten of them. Of course, that was years ago, but certainly within the last ten.