[  948.855062][T20932] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  948.855545][T20932] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address
[  949.537586][T20989] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address
[  949.538122][T20989] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode