[  949.274855][T20539] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  949.280457][T20539] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  950.120536][T20604] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  950.124718][T20604] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode