mmm... I'm not well versed in PPP, but I bet that once the connection has been established, your link needs to be really bad for you to notice anything. Any errors at PPP will be masked by TCP or the application recovering. Have you actually checked if this fcs error repeats during connection established phase ? My bet: > I guess you should see why there are two packets when there is a bad > fcs. It is the only moment when it happens. Looks like "someone" got > interrupted and didn't finish a transfer, lost state, and then resumed > with some missing bytes in the middle, causing an fcs failure. > Check your USB statistics, maybe transfer errors are firing something > unexpected. >
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