/usr/lib/x86_64-linux-gnu/libgig.so.6 is in libgig6v5 3.3.0-5+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgig.so.6.4.0
/usr/lib/x86_64-linux-gnu/libgig.so.6.4.0