From owner-freebsd-hackers Sat May 15 1:47:43 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from uni4nn.gn.iaf.nl (osmium.gn.iaf.nl [193.67.144.12]) by hub.freebsd.org (Postfix) with ESMTP id A666C15121 for ; Sat, 15 May 1999 01:47:15 -0700 (PDT) (envelope-from wilko@yedi.iaf.nl) Received: from yedi.iaf.nl (uucp@localhost) by uni4nn.gn.iaf.nl (8.9.2/8.9.2) with UUCP id JAA17499; Sat, 15 May 1999 09:57:06 +0200 (MET DST) Received: (from wilko@localhost) by yedi.iaf.nl (8.9.3/8.9.3) id UAA05979; Fri, 14 May 1999 20:08:21 +0200 (CEST) (envelope-from wilko) From: Wilko Bulte Message-Id: <199905141808.UAA05979@yedi.iaf.nl> Subject: Re: ifconfig: changing mac address In-Reply-To: <199905141918.PAA01313@pcnet1.pcnet.com> from Daniel Eischen at "May 14, 1999 3:18:21 pm" To: eischen@vigrid.com (Daniel Eischen) Date: Fri, 14 May 1999 20:08:21 +0200 (CEST) Cc: Steve.Gailey@db.com, nate@mt.sri.com, freebsd-hackers@freebsd.org X-Organisation: Private FreeBSD site - Arnhem, The Netherlands X-pgp-info: PGP public key at 'finger wilko@freefall.freebsd.org' X-Mailer: ELM [version 2.4ME+ PL43 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG As Daniel Eischen wrote ... > > > Is it possible to change the mac address of an ethernet card using > > > ifconfig? > > > > Not in any 'standard' card, no. Some cards (in SUN workstations) allow > > you to swap the EEPROM with the mac address, and I'll bet somewhere > > someone has designed a card with a programmable mac address, but > > normally it's not settable. > > Yeah, we've got some Dy-4 m68k-based single board computers that > allow the lower 3 bytes of the MAC address to be programmed. It's > kind of annoying though, because the lower 3 bytes are always > set to 0 and we have to uniquely set them for each board that > we deliver to our customer. > > The MAC addresses were meant to be unique; why do you want the > ability to change them? So you can make M$ viruses without > anyone figuring it out who made them ;-)? Things like DECnet set the MAC address. Don't ask me why though. | / o / / _ Arnhem, The Netherlands - Powered by FreeBSD - |/|/ / / /( (_) Bulte WWW : http://www.tcja.nl http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message