From owner-freebsd-net  Tue Sep  4  2:23:55 2001
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From: Brahma Naidu Golla <gbnaidu@sasken.com>
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Date: Tue, 4 Sep 2001 14:53:37 +0530 (IST)
To: freebsd-net@FreeBSD.org
Cc: sameerbr@sasken.com
Subject: Packet capturing at Link Layer...
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Hi,

I would like to capture certain packets (Based on the Protocol type of
ether header) at the link layer. I dont want the copies of the packets, but
I want the packets to be received by my user land application and not to be
processed by the L3 and L4. Could some body give me some pointers on this?

One possibility is to use Raw sockets at the link layer. But how do I
specify the protocol type of ether header to filter the packets?

TIA
--gb

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