Date: Wed, 17 Mar 1999 12:54:46 -0600 (CST) From: "Jasper O'Malley" <jooji@webnology.com> To: Brett Glass <brett@lariat.org> Cc: Dag-Erling Smorgrav <des@flood.ping.uio.no>, Greg Lehey <grog@lemis.com>, The Hermit Hacker <scrappy@hub.org>, Mark Ovens <marko@uk.radan.com>, freebsd-chat@FreeBSD.ORG Subject: Re: Intel PIII "Anti Piracy Feature"? Message-ID: <Pine.LNX.4.02.9903171251310.23070-100000@mercury.webnology.com> In-Reply-To: <4.1.19990317093554.03e4dc60@localhost>
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On Wed, 17 Mar 1999, Brett Glass wrote:
> At 07:04 AM 3/17/99 +0100, Dag-Erling Smorgrav wrote:
>
> >No, what he means is that 16 of the 48 bytes of the MAC are the vendor
> >code. But this is not relevant since the machine in question was an
> >x86, and the vendor code might be anything (or nothing at all).
>
> Actually, the IEEE still assigns ranges of Ethernet addresses to vendors
> in an attempt to avoid overlap between MAC addresses. It has nothing to
> do with the type of CPU....
It's a semantic point, but the IEEE assigns Organizationally Unique
Identifiers, which are 24-bit (not 16-bit) identification numbers that
most network equipment manufacturers use for the first 24 bits of the MAC
address on the equipment they sell. The OUI can and is used for other
things, and lazy/sleazy NIC manufacturers use MAC addresses that have
nothing to do with an OUI.
Cheers,
Mick
The Reverend Jasper P. O'Malley dotdot:jooji@webnology.com
Systems Administrator ringring:asktheadmiral
Webnology, LLC woowoo:http://www.webnology.com/~jooji
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