> Question #1: Is it _ethical_ (legality aside) to take someone else'sactively maintained work (for example an OpenBSD driver) and make
changes which can not be shared/used by the original developer/maintainer?
Answer #1: Considering that the whole reason I personally choose the GPL
for some projects is to prevent this sort of one way street behavior
_away_ from the original OSS developers/contributors _my_ answer must
be; No it is not ethical.
I beg to differ. If you want to put things out there for others to use
but want to avoid having the situation as you describe it, simply
license the work as such (which would be neither BSD nor GPL)-
requiring any changes to come back to the original maintainer.
*Snort*. I seem to recall Unix commercial distributions that made
claims that bug fixes that you made belonged to them.