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/usr/share/doc/libnl-3-200-dbg/changelog.Debian.gz is in libnl-3-200-dbg 3.2.27-1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/doc/libnl-3-200-dbg/../libnl-3-200/changelog.Debian.gz