IP Filter changes its license?

BSDToday reports that a new clause has apparently been added to Darren Reed’s license for IP Filter, the software for providing firewall
services, packet filtering, and network address translation included with NetBSD, FreeBSD, and OpenBSD. The new clause, which seems to conflict with the rest of the Open Source license: “Yes, this means that derivitive or modified works are not permitted without the author’s prior consent.”