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    SubjectRe: Dual-Licensing Linux Kernel with GPL V2 and GPL V3
    On Mon, 18 Jun 2007, Alexandre Oliva wrote:

    > On Jun 18, 2007, david@lang.hm wrote:
    >
    >> On Mon, 18 Jun 2007, Alexandre Oliva wrote:
    >>> On Jun 18, 2007, david@lang.hm wrote:
    >>>
    >>>> they want to prevent anyone from modifying the credit card machine to
    >>>> store copies of all the card info locally.
    >>>
    >>> I see. Thanks for enlightening me.
    >>>
    >>>> you don't really answer this issue. since these boxes are required to
    >>>> be sealed and physically anti-tamper, changing the ROM is not
    >>>> acceptable.
    >>>
    >>> Given the ROM exception in GPLv3, I guess you could seal and
    >>> anti-tamper it as much as you want, and leave the ROM at such a place
    >>> in which it's easily replaceable but with signature checking and all
    >>> such that the user doesn't install ROM that is not authorized by you.
    >
    >> 'sealed, but easy to replace ROM containing the programming' is a
    >> contridiction.
    >
    >> if a local person can easily replace the programming it doesn't meet
    >> the PCI requirements and therefor you just cannot use GPLv3 code for
    >> this sort of application.
    >
    > How can someone easily replace the programming if there's signature
    > checking and all?
    >
    > The sealing of the ROMmed software is accomplished by other means, but
    > it's there. I shall mention that I'm not endorsing or recommending
    > this practice, it might very well be copyright infringement even under
    > GPLv1 and v2.

    Ok, next question, could you do the same thing if you used a CD instead of
    a ROM?

    what makes a blob delivered via a network inherently different from the
    same blob delivered via a plugin ROM or CD?

    David Lang
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