[CentOS] upgrading Centos-Xen when version 6 comes along

Gabriel Tabares gabriel.tabares at roboreus.com
Thu Nov 18 14:33:41 UTC 2010

> Also, if you assign MACs to your VMs at installation time (I do, for
> DHCP- and DNS-related reasons), you should note that KVM MACs lives in
> a different namespace: 54:52:00:xx:xx:xx.

You can change the allocated MAC address by editing the files in 
/etc/libvirt/qemu .

Edit the <mac address='54:52:00:19:f2:ef'/> section and you're all set.

I am not sure if you need to restart libvirtd after making the changes, 
as I have not got a machine I can test that at the moment.

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