So would it be legal for someone to port the OpenBSD teams PF (packet filter), which uses the BSD license, to be used in Linux.  I am just asking about legally, nothing about the technical challenges in making a BSD kernel module work as a Linux kernel module.  I assume this would mean foking the PF code into two seperate open source projects.

Dusty


> On Thu, 6 Sep 2001, Warren Togami wrote:
> >The BSD license without the advertising clause is considered "GPL
> >compatible" and approved by OSI, but the copyright owner of the code must
> >relicense it under a different license in order to make a GPL release.
> 
> That is not my understanding of distribution licenses.  The BSD license
> explicitly grants you the right to change the license.  But it also
> explicitly require the copyright notice to be intact; probably to make
> sure the recipient knows who the original authors were.
> 
> What this means is that you can take a BSD licensed software and make it
> proprietary.  That is one of the main arguments BSD'ers have against GPL
> software.  GPL does not allow this.
> 
> Of course, relicensing is not the issue here.  The issue is porting of a
> BSD kernel software into a GPL kernel software.  In other words, combining
> BSD and GPL source code.  This is only possible if the two licenses grant
> the same rights _AND_ does not prevent the other license from imposing
> certain restrictions.
> 
> Basically, it is possible to release a software under a dual license.
> This is done all of the time.  The trick is, the licenses must _NOT_ be
> mutually exclusive.
> 
> --jc
> --
> Jimen Ching (WH6BRR)      jching@flex.com     wh6brr@uhm.ampr.org
> 
> 
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