/usr/lib/x86_64-linux-gnu/libsmi.so.2 is in libsmi2ldbl 0.4.8+dfsg2-8ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsmi.so.2.0.27
/usr/lib/x86_64-linux-gnu/libsmi.so.2.0.27