/usr/lib/x86_64-linux-gnu/libnetfilter_log_libipulog.so is in libnetfilter-log-dev 1.0.1-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libnetfilter_log_libipulog.so.1.0.0