From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1FlWph-0000sC-IQ for user-mode-linux-devel@lists.sourceforge.net; Wed, 31 May 2006 12:58:21 -0700 Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1FlWph-00079W-7H for user-mode-linux-devel@lists.sourceforge.net; Wed, 31 May 2006 12:58:21 -0700 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1FlWoI-00074Z-WC for user-mode-linux-devel@lists.sourceforge.net; Wed, 31 May 2006 21:56:55 +0200 Received: from jameson.reflexsecurity.com ([72.54.64.66]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 31 May 2006 21:56:54 +0200 Received: from lunz by jameson.reflexsecurity.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 31 May 2006 21:56:54 +0200 From: Jason Lunz Message-ID: References: <200605302013.00091.blaisorblade@yahoo.it> <20060531190553.GA6111@ccure.user-mode-linux.org> Subject: [uml-devel] Re: Randomize on MAC address when bringing up ethernet iface Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Wed, 31 May 2006 19:56:06 +0000 (UTC) To: user-mode-linux-devel@lists.sourceforge.net jdike@addtoit.com said: > So what is the second bit? I only know about the broadcast/multicast bit, and > no one has bothered clueing me in on any other special bits :-) the other one's the "locally administered" bit. It's a lot like rfc1918 address space in ipv4, only for ethernet. wikipedia's discussion is decent: http://en.wikipedia.org/wiki/MAC_address http://en.wikipedia.org/wiki/Locally_Administered_Address those are the only two special mac address bits that i'm aware of. The effect of setting it is that you ensure that your randomly-generated mac address will never collide with a globally administered one. Of course, it might collide with other locally-administered ones. Jason ------------------------------------------------------- All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel