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    SubjectRE: Entirely ignoring TCP and UDP checksum in kernel level
    Linux Kernel 2.4.18-14 [Redhat 8 standard installation] 

    As I underlined, I have been able to disable IP header checksumming for the
    received packets, so the system will not drop the packets even after CRC
    becomes invalid when the source address changes.

    I have been asking this question over ten different mailing list and forums
    and no one has come up with a "solid" solution. I would be exteremely glad
    if I get a working source code.

    I know the application will be so very simple, just changing some bits with
    another and putting it back to userspace, but it requires some low-level
    libraries and the knowledge to use them...

    -----Original Message-----
    From: Brad Campbell []
    Sent: Sunday, August 22, 2004 9:04 AM
    To: Josan Kadett
    Subject: Re: Entirely ignoring TCP and UDP checksum in kernel level

    The main reason I suggested correcting the checksum is if it was done that
    way, the kernel would
    behave normally for all other IP traffic and simply do a dodgy on only
    traffic from

    If nobody else jumps in, let me think about it for a day or so and I'll see
    what I can do. It's been
    a couple of years since I last looked at the network code though.

    What kernel are you running?


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