Once at work I tried to upload a file to our fileserver to share it with some coworkers and it failed. Other files uploaded fine. The file wasn't very large, di

Once at work I tried to upload a file to our fileserver to share it with some coworkers and it failed. Other files uploaded fine. The file wasn't very large, didn't have any funny characters in the name, or anything that would conflict with a reserved name, or anything like that. After some experimenting I was able to figure out that there was a particular byte sequence that simply could not be sent via the ethernet card in my computer. I changed ethernet cards and then I could send the file. After a lot of searching I eventually found a few discussions of this, and an errata list for the chipset in my ethernet card that said that a particular revision of the chipset had an error in the checksum implementation that would compute an incorrect checksum for a particular bit pattern.