/usr/lib/x86_64-linux-gnu/libnetcdf.so is in libnetcdf-dev 1:4.4.1.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libnetcdf.so.11
/usr/lib/x86_64-linux-gnu/libnetcdf.so.11