/usr/share/doc/libpcap-dev/changelog.Debian.gz is in libpcap-dev 1.8.1-6ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libpcap-dev/../libpcap0.8-dev/changelog.Debian.gz
/usr/share/doc/libpcap-dev/../libpcap0.8-dev/changelog.Debian.gz