> Just a "me, too".  I had a similar problem with an fxp board which worked
> just fine under 1.5X, but didn't see any traffic on a 1.5X SMP kernel.
> Another fxp device in the same host worked fine under both.

I have a working fxp card in a SMP machine running -current, so your observation
is right: some boards at least seem to work.

To figure out the differences, you should provide some data - starting with
a full dmesg.

Martin