From owner-freebsd-mobile Mon Aug 27 10:25:47 2001 Delivered-To: freebsd-mobile@freebsd.org Received: from freeway.dcfinc.com (cx74889-a.phnx3.az.home.com [24.1.193.157]) by hub.freebsd.org (Postfix) with ESMTP id 2C2B737B405 for ; Mon, 27 Aug 2001 10:25:41 -0700 (PDT) (envelope-from chad@freeway.dcfinc.com) Received: (from chad@localhost) by freeway.dcfinc.com (8.8.7/8.8.3a) id JAA17978; Mon, 27 Aug 2001 09:29:34 -0700 (MST) From: "Chad R. Larson" Message-Id: <200108271629.JAA17978@freeway.dcfinc.com> Subject: Re: Frustrating network problem - need diagnotic help To: oberman@es.net (Kevin Oberman) Date: Mon, 27 Aug 101 09:29:34 -0700 (MST) Cc: reader@newsguy.com, freebsd-mobile@FreeBSD.ORG In-Reply-To: <200108271606.f7RG6cR23974@ptavv.es.net> from Kevin Oberman at "Aug 27, 1 09:06:38 am" Reply-To: chad@DCFinc.com X-unexpected: The Spanish Inquisition X-Mailer: ELM [version 2.4ME+ PL22 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >> "Kevin Oberman" writes: > If you tweak the software to assign a MAC address to the something > else that is locally administered (different from setting the MAC to > the globally unique address of some older interface that failed), the > hex would be: a:0:2b:3f:a5:15 (not that anyone does this any longer > and there is no reason to assume that any part of the hardware MAC > would be used if you are using a locally administered MAC). Actually, once you've set the second bit (mask 0x04), the other 46 bits can be anything you want them to be =and= you assume the responsibility for assuring they are unique within your collision domain. And, I don't recall a rule that says you can't have a multicast source address (though my 802.3 book is at the office). So, I'd agree that the source address he's reporting is most probably borked, but if that first byte were 0x03 (vs 0x01) he'd probably be legal. But that's also probably not what he wants... -crl -- Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm? chad@dcfinc.com chad@larsons.org larson1@home.net DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message