/usr/share/doc/tao-ifr/changelog.Debian.gz is in tao-ifr 6.0.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/tao-ifr/../libace-6.0.1/changelog.Debian.gz
/usr/share/doc/tao-ifr/../libace-6.0.1/changelog.Debian.gz