[  786.062054] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  786.062149] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  786.168166] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  786.168233] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode