From owner-freebsd-questions  Fri Jun  4  9: 3: 5 1999
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Date: Fri, 4 Jun 1999 18:07:19 +0200 (CEST)
From: Riccardo Veraldi <riccardo@righi.ml.org>
To: "Pavel V. Antipov" <pavel@ikar.elect.ru>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: Ethernet-level connection
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the lastest FreeBSD release is 3.2

On Fri, 4 Jun 1999, Pavel V. Antipov wrote:

> 
> 
> On Fri, 4 Jun 1999, Riccardo Veraldi wrote:
> 
> > 
> > 
> > Hello.
> > I did a FreeBSD port called sniff. and to have access to ethernet packets
> > I just used tcpdump. AS well tcpdump is written using libpcap.
> > I wanted to access directly to the ethernet device without using libpcap
> > or tcpdump but since now noone could answer to my question.
> > Do u have any clue about it ?
> > thanks 
> > 
> > Rick
> > 
> 
> Hi !
> 
> I saw PF_PACKET parameter for system call "socket" in linux. In FreeBSD
> thare is PF_LINK (see <sys/sockst.h>).
> I tried to execute this program:
> 
> #include <sys/types.h>
> #include <sys/socket.h>
> #include <iostream.h>
> #include <errno.h>
> 
> main(){
>  cout << socket(AF_LINK, SOCK_RAW, 0)<<endl;
>  cout<<errno<<endl;
> }
> 
> As a result errno == 43. I use 2.2.5 and hope that in latest versions of
> FreeBSD I'll find direct access to Ethernet packets via
> socket & recvfrom & sendto system calls.
> 
> Pavel
> 
> 
> 
> 
> 
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