bluez-hcidump 5.53-0ubuntu3 (s390x binary) in ubuntu focal

 The hcidump utility allows the monitoring of Bluetooth activity.
 It provides a disassembly of the Bluetooth traffic and can display
 packets from higher level protocols such as RFCOMM, SDP and BNEP.
 .
 This was the software that is independent as bluez-hcidump, but this has been
 integrated into BlueZ from BlueZ 5.0.
 .
 BlueZ is the official Linux Bluetooth protocol stack. It is an Open Source
 project distributed under GNU General Public License (GPL).