/usr/lib/x86_64-linux-gnu/libpcap.so is in libpcap0.8-dev 1.8.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpcap.so.0.8
/usr/lib/x86_64-linux-gnu/libpcap.so.0.8