[ovirt-users] 4.18 -> 4.2 Upgrade Erases "ifconfig-ovirtmgmt" at Every Node Restart

Hi ! I upgraded host engine (separate appliance, not hosted) 4.18 -> 4.2, and now on every restart node01 (right now only 1 node connected) have "ifconfig-ovirtmgmt” wiped out. Node was installed on CentOS. Network was configured manually. Node 4.18 -> 4.2 upgrade from host engine didn’t worked for the reason above. I manually upgraded node software with "yum update” and new 4.2 repo. However, every node restart still results in wiped out "ifconfig-ovirtmgmt”, and therefore, node not accessible from network anymore. What could be missing from oVirt config which results in this behaviour? Thanks in advance. Andrei