[libvirt-users] control ip address of VM

[zorg]

HI
I have 15 vm (libvirt + kvm) with a network brigde and ip address like

192.168.0.1 VM1
192.168.0.2 VM2
192.168.0.3 VM3
.....

The vm are use by other people and I want to be sure that if someone 
change the ip of VM3 to 192.168.0.1 it will filter it network traffic 
for him and can't flood the VM1


What the best way to achieve this

Hope I m clear enough