Ethereal-users: Re: [Ethereal-users] capturing bad packets

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Thu, 26 Jul 2001 00:26:53 -0700
On Thu, Jul 26, 2001 at 12:51:58PM +0530, Vinish Nigam wrote:
> I would like to know that, how one can receive the bad packects ( packet
> with CRC errors)  from the network in any flavior of UNIX.

You can only do it if the underlying OS supports it in its raw packet
capture mechanism; libpcap can't do anything that the underlying OS
won't let it do, and I don't know whether any flavor of UNIX allows the
raw packet capture mechanism to see packets with bad CRCs.