[ 949.923056][T21030] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 949.924254][T21030] test-bond0: (slave test-noneth0): Error -95 calling set_mac_address [ 950.667144][T21092] test-bond0: (slave test-noneth0): The slave device specified does not support setting the MAC address [ 950.670696][T21092] test-bond0: (slave test-noneth0): Setting fail_over_mac to active for active-backup mode