Bluetooth: hci6: Opcode 0x0c1a failed: -4
Bluetooth: hci6: Error when powering off device on rfkill (-4)
Bluetooth: hci7: Opcode 0x0c1a failed: -4
Bluetooth: hci7: Error when powering off device on rfkill (-4)
unregister_netdevice: waiting for lo to become free. Usage count = 2