From owner-freebsd-net@FreeBSD.ORG  Mon Mar 21 13:40:18 2005
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 029ED16A4CE
	for <freebsd-net@freebsd.org>; Mon, 21 Mar 2005 13:40:18 +0000 (GMT)
Received: from mailserver.sandvine.com (sandvine.com [199.243.201.138])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8D4B843D4C
	for <freebsd-net@freebsd.org>; Mon, 21 Mar 2005 13:40:17 +0000 (GMT)
	(envelope-from don@SANDVINE.com)
X-MimeOLE: Produced By Microsoft Exchange V6.0.6603.0
content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Date: Mon, 21 Mar 2005 08:40:16 -0500
Message-ID: <2BCEB9A37A4D354AA276774EE13FB8C23A6720@mailserver.sandvine.com>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: Sending Ethernet frames
Thread-Index: AcUuFtflWRgkwcUBSneWea4ca83OhQABJBTg
From: "Don Bowman" <don@SANDVINE.com>
To: "Patrik Arlos" <Patrik.Arlos@bth.se>, <freebsd-net@freebsd.org>
Subject: RE: Sending Ethernet frames
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 21 Mar 2005 13:40:18 -0000

From: owner-freebsd-net@freebsd.org On Behalf Of Patrik Arlos
> Hi,
>=20
> =20
>=20
> I'm trying to send 'raw' Ethernet frames. I have however not=20
> found any examples of how to do this in BSD.=20
>=20
> Is it possible to open a 'ethernet' socket, similar to a=20
> AF_INET?  I need to be able to control the destination=20
> address and type/len field in the Ethernet header.=20
>=20
> In Linux it is possible open a SOCK_RAW and bind it to a=20
> particular interface, I've tried to use the sockadd_dl but in=20
> this case bind dies with error 22, any way to do this?=20

You can chmod +w on /dev/bpf* and then open & write to a bpf
device.