[ovs-vsctl: cannot delete port a because it is the local port for bridge a (deleting this port requires deleting the entire bridge)
],
[OVS_VSCTL_CLEANUP])
+AT_CHECK([RUN_OVS_VSCTL([--if-exists del-port a])], [0], [], [],
+ [OVS_VSCTL_CLEANUP])
AT_CHECK([RUN_OVS_VSCTL([--may-exist add-port a b1])], [1], [],
[ovs-vsctl: "--may-exist add-port a b1" but b1 is actually attached to bridge b
],