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From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: virtual interface mac adress
Date: Sun, 4 Dec 2005 12:41:22 -0800 (PST)	[thread overview]
Message-ID: <dmvk9i$631$1@terminus.zytor.com> (raw)
In-Reply-To: Pine.LNX.4.63.0512041520320.29211@cuia.boston.redhat.com

Followup to:  <Pine.LNX.4.63.0512041520320.29211@cuia.boston.redhat.com>
By author:    Rik van Riel <riel@redhat.com>
In newsgroup: linux.dev.kernel
>
> On Sun, 4 Dec 2005, anil dahiya wrote:
> 
> > I want to assign mac addres to virtual adpater and mac
> > address should be like that if it should not create
> > problem in arp resoultion(i.e. mac address should be
> > as real card which able to comunicate  on lan )
> 
> You may be able to get away with using a MAC address
> inside the OUI range that XenSource registered.
> 

Any MAC with bit 0 clear and bit 1 set in the first octet is "local
use"; the best thing to do (unless you have your own OUI) is just to
pick a random address inside this range.  You should only run into
collision problems when you get close to 2^23 hosts on a network.

	-hpa

  reply	other threads:[~2005-12-04 20:41 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-04 19:29 virtual interface mac adress anil dahiya
2005-12-04 20:20 ` Rik van Riel
2005-12-04 20:41   ` H. Peter Anvin [this message]
2005-12-05  4:05     ` Mark Rustad
2005-12-05  4:57       ` H. Peter Anvin
2005-12-05 18:01 ` Stephen Hemminger

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