[ 949.161470][T20142] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 949.162015][T20142] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address [ 950.090625][T20192] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 950.090929][T20192] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode