Hi Community, Right to the point: I'm struggling with the bellow error: Validate selected bridge interface if management bridge does not exists][ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "The selected network interface is not valid I can not find any reason why it is rejecting my interface from being valid: [root@ovirttest ~]# ip a sh dev enp0s31f6 2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 8c:16:45:b8:4d:00 brd ff:ff:ff:ff:ff:ff inet 192.168.130.8/24 brd 192.168.130.255 scope global noprefixroute enp0s31f6 valid_lft forever preferred_lft forever inet6 fe80::c7fc:cf7:92a7:e4c/64 scope link noprefixroute valid_lft forever preferred_lft forever [root@ovirttest ~]# ping `hostname -f` -c 1 PING ovirttest.local.test (192.168.130.8) 56(84) bytes of data. 64 bytes from ovirttest.local.test (192.168.130.8): icmp_seq=1 ttl=64 time=0.027 ms --- ovirttest.local.test ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.027/0.027/0.027/0.000 ms [root@ovirttest ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.9 (Maipo) [root@ovirttest ~]# rpm -q ovirt-engine ovirt-engine-4.3.10.4-1.el7.noarch [root@ovirttest ~]# If I only knew what are the conditions checked against the interface.... I found many posts about this issue, mean - the same error message, but none of the sollution fits to me...:-( Kindly please for advise.... Jan