The ọtụtụ-eji Apache License na GNU General Public License na-atụle gabiga ókè mgbochi. Na June 2001, triggered site nchegbu n'elu Darren Reed si mgbanwe nke IPFilter si ikike wording, a usoro ikikere oditi nke OpenBSD ọdụ ụgbọ mmiri na isi iyi osisi e rụrụ. Na ihe karịrị otu narị faịlụ ofụri usoro e hụrụ na-unlicensed, ambiguously ikikere ma ọ bụ na-eji megide usoro nke Code. Iji hụ na niile dị mkpa ikikere na-ekwesị agbaso, e mere a mgbalị ịkpọtụrụ ụfọdụ n'ime mbụ Berkeley Unix nwebisiinka, nke kwere a "dịtụ unencumbered Unix isi iyi nkesa".
Berkeley Unix