Disable TCP Checksum offloading?


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Does anyone know how to disable TCP Checksum offloading on OS X 10.4.3 (iBook G4)?

I'm experiencing checksum errors when analysing TCPdumps using Ethereal, and need to establish the cause. It sounds like it's down to TCP checksum offloading, so I need to ensure the checksum is calculated before the packet reaches Ethereal.... otherwise I can't trust the data to hunt the main problem (issues binding to a secured Win2k domain).

Thanks!

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