/usr/lib/x86_64-linux-gnu/libIV.so.1 is in libiv1 1.2.11a1-8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libIV.so.1.2.8
/usr/lib/x86_64-linux-gnu/libIV.so.1.2.8