ok reading the list nick had this to say :
"
Accusing us of violating GPL is a serious legal claim.
In fact, we are not violating GPL. In short, this is because we wrote
the code you are referring to (the SCSI target core in our commercial
RTS OS product), we have exclusive copyright ownership of it, and this
code contains no GPL code from the community. GPL obligations only
apply downstream to licensees, and not to the author of the code. Those
who use the code under GPL are subject to its conditions; we are not.
As you know, we contributed the Linux SCSI target core, including the
relevant interfaces, to the Linux kernel. To be clear, we wrote that
code entirely ourselves, so we have the right to use it as we please.
The version we use in RTS OS is a different, proprietary version, which
we also wrote ourselves. However, the fact that we contributed a
version of the code to the Linux kernel does not require us to provide
our proprietary version to anyone.
If you want to understand better how dual licensing works, perhaps we
can talk off list. But we don’t really have a responsibility to respond
to untrue accusations, nor to explain GPL, nor discuss our proprietary
code.
We’re very disappointed that Red Hat would not be more professional in
its communications about licensing compliance matters, particularly to a
company like ours that has been a major contributor to Linux and
therefore also to Red Hat’s own products. So, while I invite you to
talk about this with us directly, I also advise you – respectfully – not
to make public accusations that are not true. That is harmful to our
reputation – and candidly, it doesn’t reflect well on you or your
company.
"
so basically if they developed the code and use a closed source OS that is not linux then redhat don't have a leg to stand on...
if they use a module inserted into linux then it will "taint" the OS then it gets shifty...
have fun
john