[ 956.806923][T20280] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 956.807808][T20280] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address [ 957.489276][T20341] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 957.489612][T20341] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode