/usr/lib/x86_64-linux-gnu/libipt.so is in libipt-dev 1.5-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libipt.so.1
/usr/lib/x86_64-linux-gnu/libipt.so.1