Re: [Xen-users] mac addresses domUs

["Emiliano Gabrielli (aka AlberT)" <AlberT@xxxxxxxxxxxxxx>]

On Thursday 27 April 2006 04:53, Fajar A. Nugraha wrote:
> Anthony Valentine wrote:
> > "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."
>
> This script will probably be useful
>
> #!/bin/bash
> prefix="00:16:3E"
>
> mac="$prefix"
> for seqnum in 1 2 3 ;do
>         part=`dd if=/dev/random bs=1 count=1 2>/dev/null | xxd -ps -u`
>         mac="$mac:$part"
> done
> echo $mac

otherwise 

echo "00:16:3E:`dd if=/dev/random bs=1 count=3 2>/dev/null | xxd -u -g 1 | 
cut -d\  -f2-4 --output-delimiter :`"

:-)

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