/usr/lib/x86_64-linux-gnu/libgnuradio-iio.so.0 is in libgnuradio-iio0 0.1.67-1+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgnuradio-iio.so.0.1
/usr/lib/x86_64-linux-gnu/libgnuradio-iio.so.0.1