See: http://search.cpan.org/~saper/Net-Pcap-0.16/ dev-perl/Net-Pcap-0.14 is ~2 years old.
*Net-Pcap-0.16 (08 Dec 2008) 08 Dec 2008; Robin H. Johnson <robbat2@gentoo.org> +Net-Pcap-0.16.ebuild: Version bump.