What is tcpdump's hook point?

John

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01-30-2008, 12:23 PM

I often notice a discrepancy between /prov/net/dev's packet count and
what is dumped in tcpdump (taking tcpdump's info on number of lost
packets into account).

Therefore I wonder at what level tcpdump hooks onto the stack. Maybe
some packets are lost on the way to tcpdump?

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