Re: tcpdump & bad tcp checksum

Darren Reed (darrenr@cyber.com.au)
Thu, 24 Jul 1997 11:01:20 +1000 (EST)

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In some mail I received from SethMeister G., sie wrote
>
> Hi guys,
>
> Just wanted to know why, if the kernel says that there was a packet with
> an invalid tcp checksum, that when I do a tcpdump and grab all the tcp
> segments, tcpdump does not say that an invalid checksum was found (and
> yes, I am using -v)...

tcpdump only checks the IP header checksum

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