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    SubjectRe: 2.2.13 ISDN funnies
    On Thu, Oct 28, 1999 at 11:04:15PM +0100, Alan Cox wrote:
    > > Async ppp in 2.2.x as well as the generic ppp in 2.3.x have no
    > > dev->hard_header() method. Karsten's routing scenario
    > > (e.g. from slip or raw hdlc device to ppp-over-ethernet) will result in
    >
    > We assume if it doesnt have a hard header method it doesnt have a hard
    > header.
    >
    > > as provided by dev_alloc_skb(). Now, if ip_output does not reallocate
    > > headroom because ppp has no dev->hard_header() method, problems might
    > > occur.
    >
    > Yes. Its a mismatched assumption rather than a bug.
    >

    OK, what should we do, insert a (dummy) dev->hard_header() method in
    the isdn driver as first workaround ?

    Karsten

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