/usr/ is in libnice-dev 0.1.13-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/nice/
/usr/share/doc/libnice-dev/AUTHORS
/usr/share/doc/libnice-dev/README
/usr/share/doc/libnice-dev/TODO
/usr/share/doc/libnice-dev/NEWS.gz
/usr/share/
/usr/share/doc/
/usr/share/doc/libnice-dev/
/usr/share/doc/libnice-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/nice.pc
/usr/include/
/usr/include/nice/debug.h
/usr/include/nice/interfaces.h
/usr/include/nice/candidate.h
/usr/include/nice/nice.h
/usr/include/nice/pseudotcp.h
/usr/include/nice/agent.h
/usr/include/nice/address.h
/usr/include/stun/
/usr/include/stun/debug.h
/usr/include/stun/usages/
/usr/include/stun/usages/bind.h
/usr/include/stun/usages/ice.h
/usr/include/stun/usages/turn.h
/usr/include/stun/usages/timer.h
/usr/include/stun/constants.h
/usr/include/stun/stunmessage.h
/usr/include/stun/stunagent.h
/usr/include/stun/win32_common.h
/usr/share/doc/libnice-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libnice.so