/usr/lib/freeradius/libfreeradius-radius.so is in libfreeradius-dev 2.2.8+dfsg-0.1ubuntu0.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/freeradius/libfreeradius-radius-020208.so
/usr/lib/freeradius/libfreeradius-radius-020208.so