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RE: [Xen-users] uniq mac address generator

  • To: "trilok nuwal" <tc.nuwal@xxxxxxxxx>, "Xen list" <Xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
  • Date: Fri, 13 Apr 2007 15:17:41 +0200
  • Delivery-date: Fri, 13 Apr 2007 06:16:48 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: Acd9zYKMGzQjakFIRneJk0kgmmKofgAABWiQ
  • Thread-topic: [Xen-users] uniq mac address generator


> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> trilok nuwal
> Sent: 13 April 2007 14:13
> To: Xen list
> Subject: [Xen-users] uniq mac address generator
> Hi All,
> I am using  easymac.sh script to genearte the uniq mac address.
> This can be downloaded from here.
> http://www.easyvmx.com/software/easymac.sh
> But How i can insure that mac geneareted by this script will 
> be uniq in whole world. Some body in the same network also 
> might use the same script 
> and can get the same  mac as i am . 
> can anybody tell me, how these will be uniq ?

It only needs to be unique to your local network - anything outside that
will not be using MAC addresses to determine the routing of the packet
anyways [AFAIK], so it's meaningless to aim for uniqueness outside your
own network (although it is of course practical to know that ALL MAC
addresses used in the entire known world are unique). 

Of course, if you're on a large corporate network, you may still have
the problem that someone else uses the same easymac script to generate
MAC addresses... 


> Thanks,
> --Trilok 

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