/usr/ is in libcorkipset-dev 1.1.1+20150311-8.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/libcorkipset/
/usr/include/libcorkipset/bdd/
/usr/include/libcorkipset/bdd/nodes.h
/usr/include/libcorkipset/bits.h
/usr/include/libcorkipset/errors.h
/usr/include/libcorkipset/ipset.h
/usr/include/libcorkipset/logging.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libcorkipset.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libcorkipset-dev/
/usr/share/doc/libcorkipset-dev/copyright
/usr/lib/x86_64-linux-gnu/libcorkipset.so
/usr/share/doc/libcorkipset-dev/README.markdown
/usr/share/doc/libcorkipset-dev/changelog.Debian.gz