We've have a FDDI board working on the AP+ under Linux, and we're
getting quite good throughput.
We haven't released our sources yet, but thats only because some of
us have been having a break and working on other things over the last
week or two. Hopefully we'll release it soon.
Our FDDI stuff should help other people who want to add support for
FDDI boards. Our board is a locally built one, though, so its nothing
like commercial boards.
Andrew