AT_CHECK([RUN_OVS_VSCTL([set b br0 flood_vlans=4096])],
[1], [], [ovs-vsctl: constraint violation: 4096 is not in the valid range 0 to 4095 (inclusive)
], [OVS_VSCTL_CLEANUP])
+AT_CHECK([RUN_OVS_VSCTL([set c br1 'connection-mode=xyz'])],
+ [1], [], [[ovs-vsctl: constraint violation: xyz is not one of the allowed values ([in-band, out-of-band])
+]], [OVS_VSCTL_CLEANUP])
AT_CHECK([RUN_OVS_VSCTL([set c br1 connection-mode:x=y])],
[1], [], [ovs-vsctl: cannot specify key to set for non-map column connection_mode
], [OVS_VSCTL_CLEANUP])