/usr/ is in libcapsinetwork-dev 0.3.0-7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libcapsinetwork-dev/
/usr/share/doc/libcapsinetwork-dev/examples/
/usr/share/doc/libcapsinetwork-dev/examples/server.cpp
/usr/share/doc/libcapsinetwork-dev/examples/server.h
/usr/share/doc/libcapsinetwork-dev/copyright
/usr/include/
/usr/include/libcapsinetwork/
/usr/include/libcapsinetwork/socket.h
/usr/include/libcapsinetwork/listener.h
/usr/include/libcapsinetwork/listenport.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libcapsinetwork.a
/usr/share/doc/libcapsinetwork-dev/AUTHORS
/usr/share/doc/libcapsinetwork-dev/NEWS.gz
/usr/share/doc/libcapsinetwork-dev/README
/usr/share/doc/libcapsinetwork-dev/TODO
/usr/share/doc/libcapsinetwork-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libcapsinetwork.so