[  948.923666][T20669] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  948.924123][T20669] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  949.622008][T20728] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  949.630827][T20728] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode