| 0xAC || 0x300 || [6.0.0+] Authentication challenge data. If enabled, the total frame size must be >= {end offset of this data in the frame}. The frame data does not include this if it's not enabled. | | 0xAC || 0x300 || [6.0.0+] Authentication challenge data. If enabled, the total frame size must be >= {end offset of this data in the frame}. The frame data does not include this if it's not enabled. |