Hi again I have recently rebooted KVM guests with two virtual NICs (e.g. /dev/ens4 and /dev/eth0) only to find that the device name of the eth0 changes to eth1 and so the ifcfg-eth0 doesn't match. So I fix the ifcfg file and restart network - all OK. On a later reboot eth1 changes back to eth0. What is going on? Anyone else observe this phenomena? Cheers Bill Maidment