Re: Can I port 4.4BSD-Lite's TCP/IP protocol stack soure code to my own OS kernel which is GPL Licence?

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05-07-2008, 10:14 AM

kevin

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Re: Can I port 4.4BSD-Lite's TCP/IP protocol stack soure code to my own OS kernel which is GPL Licence?

----- Original Message -----
From: "Hannah Schroeter" <hannah@schlund.de>
To: <hlwhyw@shtel.net.cn>
Cc: <tech@openbsd.org>
Sent: Monday, May 05, 2008 8:14 PM
Subject: Re: Can I port 4.4BSD-Lite's TCP/IP protocol stack soure code to my own OS kernel which is GPL Licence?

> Hi!
>
> On Mon, May 05, 2008 at 10:01:28AM +0800, hlwhyw@shtel.net.cn wrote:
>>Can I port 4.4BSD-Lite's TCP/IP protocol stack
>>soure code to my own OS kernel which is GPL
>>Licence?
>
>>I know that 4.4BSD-Lite is BSD Licenced. Is it
>>legal to port BSD Licenced code and change it to
>>GPL licence?
>
> As Theo de Raadt already wrote, you may not change the license of BSD
> licensed code. However, the BSD license is compatible to the GPL in the
> sense that you can combine it with GPLed code with no real hassles.
>
> If you have to change the BSD licensed code in a trivial way to port it
> to your kernel, it remains BSD licensed. If you have to change it in a
> non-trivial, copyrightable way, you can license your *changes* the way
> you like (e.g. under the GPL if you choose so).
Thanks.
So I can do it in this way:
Modify the BSD's TCP/IP source code trivialy and keep it BSD licensed as it was.
Compile it with other GPLed kernel source code.
Release the binary kernel and all BSDed and GPLed source codes.
I won't be in trouble. Is it right?

>
>>Kevin Wu
>
> Kind regards,
>
> Hannah.

« Re: Uberry driver | Re: ??:Re: Can I port 4.4BSD-Lite's TCP/IP protocol stack soure code to my own OS kernel which is GPL Licence? »

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Re: Can I port 4.4BSD-Lite's TCP/IP protocol stack soure code to my own OS kernel which is GPL Licence?