A nameless reader writes:
"A few hours ago Theo DeRaadt removed the ipf source from the OpenBSD cvs tree in reaction to the licensing change by Darren Reed, the author of ipf. Theo's remarks on the licensing change are visible in the commit log
here." Theo notes there that "software
which OpenBSD uses and redistributes must be free to all (be they
people or companies), for any purpose they wish to use it, including
modification, use, peeing on, or even integration into baby mulching
machines or atomic bombs to be dropped on Australia." That's keeping things all-purpose all right ;)