I spotted this recently:
http://lists.freebsd.org/pipermail/freebsd-pf/2010-October/005842.html
I haven't tried it yet, but thought I'd relay it here.
http://lists.freebsd.org/pipermail/freebsd-pf/2010-October/005842.html
I haven't tried it yet, but thought I'd relay it here.