/usr/lib/x86_64-linux-gnu/libkdb5.so.6 is in libkdb5-6 1.10+dfsg~beta1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libkdb5.so.6.0
/usr/lib/x86_64-linux-gnu/libkdb5.so.6.0