/usr/lib/x86_64-linux-gnu/libnice.so is in libnice-dev 0.1.7-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libnice.so.10.4.1
/usr/lib/x86_64-linux-gnu/libnice.so.10.4.1