/usr/lib/x86_64-linux-gnu/libzmqpp.so is in libzmqpp-dev 4.1.2-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libzmqpp.so.4.1.2
/usr/lib/x86_64-linux-gnu/libzmqpp.so.4.1.2