/usr/include/ace/Monitor_Control/ is in libace-dev 6.0.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ace/Monitor_Control/Auto_Update_Starter.h
/usr/include/ace/Monitor_Control/BSD_Network_Interface_Monitor.h
/usr/include/ace/Monitor_Control/Bytes_Received_Monitor.h
/usr/include/ace/Monitor_Control/Bytes_Sent_Monitor.h
/usr/include/ace/Monitor_Control/CPU_Load_Monitor.h
/usr/include/ace/Monitor_Control/Constraint_Interpreter.h
/usr/include/ace/Monitor_Control/Constraint_Visitor.h
/usr/include/ace/Monitor_Control/FreeBSD_Network_Interface_Monitor.h
/usr/include/ace/Monitor_Control/Linux_Network_Interface_Monitor.h
/usr/include/ace/Monitor_Control/Memory_Usage_Monitor.h
/usr/include/ace/Monitor_Control/Monitor_Control.h
/usr/include/ace/Monitor_Control/Monitor_Control_export.h
/usr/include/ace/Monitor_Control/Monitor_Control_utils.h
/usr/include/ace/Monitor_Control/Monitor_Group.h
/usr/include/ace/Monitor_Control/Monitor_Query.h
/usr/include/ace/Monitor_Control/Null_Network_Interface_Monitor.h
/usr/include/ace/Monitor_Control/Num_Threads_Monitor.h
/usr/include/ace/Monitor_Control/Packets_Received_Monitor.h
/usr/include/ace/Monitor_Control/Packets_Sent_Monitor.h
/usr/include/ace/Monitor_Control/Solaris_Network_Interface_Monitor.h
/usr/include/ace/Monitor_Control/Windows_Monitor.h
/usr/include/ace/Monitor_Control/Windows_Multi_Instance_Monitor.h