[  939.249000][T20401] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  939.249465][T20401] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  939.975274][T20460] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  939.975583][T20460] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode