Edwin Groothuis wrote:

On Wed, Sep 17, 2003 at 06:31:03PM -0700, Josh Brooks wrote:


Whenever I run:

tcpdump -vvv

when I am finished, I am surprised to see:

27441 packets received by filter
7866 packets dropped by kernel



That's because the buffer of captures-but-not-yet-processed packets in tcpdump was filled up. In other words, your system is to slow to process the amount of traffic going through your machine.



Sure, but because the bug in pcap-bpf.c there is no way to set the buffer above 32768
without recompiling the library after applying the patch.


This bug should be fixed in the FreeBSD copy of libpcap because tcpdump folks seem
to be quite dormant.


Pete


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