How to capture/dump Bluetooth LE Link Layer packets in linux without sniffer?
问题 I want to capture/dump BLE air interface Link Layer packets in linux stably. The BLE air interface Link Layer packets seem like follows: sniffered using ubertooth when connecting another BLE device However, sniffering through ubertooth is much less reliable(often lose packets). So, I want to dump BLE traffic data using tools like tcpdump and btmon. I got results like this: result of tcpdump when connecting another BLE device However, there is no information about LL_ENC_REQ and LL_ENC_RSP,