/usr/share/doc/bind9/changelog.Debian.gz is in bind9 1:9.10.3.dfsg.P4-8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/bind9/../libbind9-140/changelog.Debian.gz
/usr/share/doc/bind9/../libbind9-140/changelog.Debian.gz