>
> I have seen TCP checksum errors from Demon with `novj', so that's not a
> solution. They are rarer, though.
>
> I've done the sums by hand, and seen that the raw PPP data (as dumped by
> the kernel when PPP debugging is turned on) really does contain invalid
> TCP checksums. The IP header checksums are fine.
>
> The erroneous packets I looked at in detail appear to be misrouted to my
> machine, too. (I shouldn't be receiving them).
>
Misconfigured or malfunctioning border router at Demon is supposed to be
the prime suspect for non-vj checksum errors to us.
Turning off vj or restricting the window size gets rid of errors caused by
Ascend dropping packets. I reported remaining errors to Tim Preston at
Demon and he diagnosed a defective border router card.
-- Shaw Carruthers - shaw@shawc.demon.co.uk London SW14 7JW UK This is not a sig( with homage to Magritte).
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/