[ovirt-users] After minor upgrade oVirt Node to 4.2.3 can't start Virtual machine

Dear all, after upgrade oVirt Node to latest 4.2.3 I can't start any virtual machine with network interface. VM machine without network interface starts normally. Exactly the same situation is on freshly installed oVirt node machine with different hardware. I use openvswitch on both machines. After some searching I found out that there are the same version of openvswitch(2.9.0-3) on old and new version of oVirt node but different versions of libvirt(3.9.0-14 vs 3.2.0-14) Error message of libvirtd when the VM machine fail to start: VM OPNsense is down with error. Exit message: Unable to add bridge ovirtmgmt port vnet0: Operation not supported. Any suggestions? Thank you. Stefan