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Description of problem:
nmcli conn add conn.type ovs-bridge conn.interface bridge0
nmcli conn add conn.type ovs-port conn.interface port1 conn.master bridge0
nmcli conn add type ethernet conn.interface eth2 conn.master port1 slave-type ovs-port

[root@wsfd-netdev34-vm-9 NetworkManager-ci]# nmcli connection 
NAME                UUID                                  TYPE        DEVICE  
ovs-bridge-bridge0  a80a2611-a8fe-4bba-a4e3-cafcb0b7d93c  ovs-bridge  bridge0 
ovs-port-port1      996a7899-2cfb-4682-a6a4-3fddc3b540a4  ovs-port    port1   
ovs-slave-eth2      76445a66-9645-4ddd-a176-dd3a1e4373c1  ethernet    eth2    
testeth0            c6eb605f-e728-405e-b147-1aab13cefe6d  ethernet    eth0    
testeth1            f3fa6960-13ff-4bd3-b23d-4f305c23bc4d  ethernet    --      

[root@wsfd-netdev34-vm-9 NetworkManager-ci]# ovs-vsctl show
82a6e8e5-e3cd-4a7f-b9ef-480177096311
    ovs_version: "2.8.0"

Version-Release number of selected component (if applicable):
1.10

Created attachment 1360854 [details]
journal log

https://cgit.freedesktop.org/NetworkManager/NetworkManager/log/?h=lr/ovs-eth

working well in CI

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0778