[  968.833625][T20137] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  968.834096][T20137] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  969.577387][T20196] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  969.577812][T20196] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode