From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: Mac-Address uniqueness Date: Thu, 31 May 2007 18:14:18 -0700 Message-ID: <465F72EA.9080608@zytor.com> References: <465E98B7.5050402@univie.ac.at> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Axel Kittenberger Return-path: In-Reply-To: <465E98B7.5050402-4JhlDu4IDl0juwv8T7myQQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Axel Kittenberger wrote: > > Unfortunally all machines detect the same ethernet address > '52:54:00:12:34:56'. Which you can guess what i means, networking comes > and goes whatever machine last the ethernet address got hold of from the > gateway. I tried specifing an ethernet-adress with "-net > nic,macaddr=$MAC" but this also didn't work through. > > For now I just hardseted the mac in all machines to 52:54:00:12:34:57, > 52:54:00:12:34:58 and so on. > This is a Qemuism. I always thought it was dumb, but I guess Qemu wanted reproducibility over everything. IMNSHO it would have been much better to default to a random value (meaning that all except the bottom 2 bits of the first octet are random, those bits should be set to 10 binary.) -hpa ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/