Description of problem:

OC deployment fails right after ~30 minutes with generic issue related to network.service on all OC nodes:

TASK [tripleo-network-config : Ensure network service is enabled] **************
Monday 26 July 2021  18:35:07 +0000 (0:00:00.103)       0:01:40.076 *********** 
fatal: [ceph-0]: FAILED! => {"changed": false, "msg": "Unable to start service network: Job for network.service failed because the control process exited with error code.\nSee \"systemctl status network.service\" and \"journalctl -xe\" for details.\n"}
fatal: [compute-0]: FAILED! => {"changed": false, "msg": "Unable to start service network: Job for network.service failed because the control process exited with error code.\nSee \"systemctl status network.service\" and \"journalctl -xe\" for details.\n"}
fatal: [controller-0]: FAILED! => {"changed": false, "msg": "Unable to start service network: Job for network.service failed because the control process exited with error code.\nSee \"systemctl status network.service\" and \"journalctl -xe\" for details.\n"}

In detail (controller-0):

controller-0 systemd[1]: Starting LSB: Bring up/down networking...
controller-0 network[1437]: WARN      : [network] You are using 'network' service provided by 'network-scripts', which are now deprecated.
controller-0 network[1437]: WARN      : [network] 'network-scripts' will be removed in one of the next major releases of RHEL.
controller-0 network[1437]: WARN      : [network] It is advised to switch to 'NetworkManager' instead for network management.
controller-0 network[1437]: Bringing up loopback interface:  [  OK  ]
controller-0 network[1437]: Bringing up interface ens3:  [  OK  ]
controller-0 network[1437]: Bringing up interface eth0:  Error: Connection activation failed: No suitable device found for this connection (device ens3 not available because profile is not compatible with device (mismatching interface name)).
controller-0 network[1437]: [FAILED]
controller-0 systemd[1]: network.service: Control process exited, code=exited status=1
controller-0 systemd[1]: network.service: Failed with result 'exit-code'.
controller-0 systemd[1]: Failed to start LSB: Bring up/down networking.
controller-0 systemd[1]: Starting LSB: Bring up/down networking...
controller-0 network[10939]: WARN      : [network] You are using 'network' service provided by 'network-scripts', which are now deprecated.
controller-0 network[10939]: WARN      : [network] 'network-scripts' will be removed in one of the next major releases of RHEL.
controller-0 network[10939]: WARN      : [network] It is advised to switch to 'NetworkManager' instead for network management.
controller-0 network[10939]: Bringing up loopback interface:  [  OK  ]
controller-0 network[10939]: Bringing up interface br-ex:  [  OK  ]
controller-0 network[10939]: Bringing up interface br-isolated:  [  OK  ]
controller-0 network[10939]: Bringing up interface ens3:  RTNETLINK answers: File exists
controller-0 network[10939]: RTNETLINK answers: File exists
controller-0 network[10939]: [  OK  ]
controller-0 ovs-vsctl[11317]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-isolated ens4 -- add-port br-isolated ens4
controller-0 network[10939]: Bringing up interface ens4:  [  OK  ]
controller-0 ovs-vsctl[11413]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-ex ens5 -- add-port br-ex ens5
controller-0 network[10939]: Bringing up interface ens5:  [  OK  ]
controller-0 network[10939]: Bringing up interface eth0:  Error: Connection activation failed: No suitable device found for this connection (device lo not available because device is strictly unmanaged).
controller-0 network[10939]: [FAILED]
controller-0 ovs-vsctl[11497]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-isolated vlan20 -- add-port br-isolated vlan20 tag=20 -- set Interface vlan20 type=internal
controller-0 network[10939]: Bringing up interface vlan20:  [  OK  ]
controller-0 ovs-vsctl[11587]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-isolated vlan30 -- add-port br-isolated vlan30 tag=30 -- set Interface vlan30 type=internal
controller-0 network[10939]: Bringing up interface vlan30:  [  OK  ]
controller-0 ovs-vsctl[11677]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-isolated vlan40 -- add-port br-isolated vlan40 tag=40 -- set Interface vlan40 type=internal
controller-0 network[10939]: Bringing up interface vlan40:  [  OK  ]
controller-0 ovs-vsctl[11767]: ovs|00001|vsctl|INFO|Called as ovs-vsctl -t 10 -- --if-exists del-port br-isolated vlan50 -- add-port br-isolated vlan50 tag=50 -- set Interface vlan50 type=internal
controller-0 network[10939]: Bringing up interface vlan50:  [  OK  ]
controller-0 network[10939]: RTNETLINK answers: File exists

controller-0 network[10939]: RTNETLINK answers: File exists
controller-0 systemd[1]: network.service: Control process exited, code=exited status=1
controller-0 systemd[1]: network.service: Failed with result 'exit-code'.
controller-0 systemd[1]: Failed to start LSB: Bring up/down networking.

Version-Release number of selected component (if applicable):

OSP16.1, RHOS-16.1-RHEL-8-20210726.n.2

How reproducible:
100%

Additional info:
rhosp-director-images.noarch 16.1-20210726.2.el8ost