[  940.204949][T20805] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  940.205412][T20805] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  941.114347][T20870] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  941.117371][T20870] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode