/usr/lib/libokteta1core.so.1 is in libokteta1core1 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libokteta1core.so.0.8.1
/usr/lib/libokteta1core.so.0.8.1