/usr/share/man/man3/pcap_freealldevs.3pcap.gz 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/share/man/man3/pcap_findalldevs.3pcap.gz
/usr/share/man/man3/pcap_findalldevs.3pcap.gz