Re: [Xen-users] mac addresses domUs

[Anthony Valentine <avalentine@xxxxxxxxxxxxx>]

Mike A. Kenny wrote:
> AFAIK every NIC manaufacturer is allocated a 2 (or is it 3?) byte prefix for 
> the device
 addresses. This prevents address clashes during ARP. Are there any 
guidelines on what macs
 to assign to domU devices? Or is this even something that one needs to 
consider?
>
Mike, the Users Manual (located at 
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/user/user.html ) 
says the following:
"You may also want to edit the vif variable in order to choose the MAC 
address of the virtual ethernet interface yourself. For example:
    vif = ['mac=00:16:3E:F6:BB:B3']

If you do not set this variable, xend will automatically generate a 
random MAC address from the range 00:16:3E:xx:xx:xx, assigned by IEEE to 
XenSource as an OUI (organizationally unique identifier). XenSource Inc. 
gives permission for anyone to use addresses randomly allocated from 
this range for use by their Xen domains."

--
Anthony Valentine
Asst. I.T. Manager
Spenard Builders Supply


UNIX was not designed to stop you from doing stupid things, because that 
would also stop you from doing clever things.
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