[ 935.024107][T20956] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 935.024562][T20956] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address [ 935.680070][T21013] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 935.680365][T21013] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode