original author: xumingyong (http://xumingyong.iteye.com/blog/586743)

This is erlang PCAP NIF. Currently supports erlang/x64 on win7-8 and WinPcap 4.1.2. Warning: NIFs are uneffective, and block the erlang VM. For better performance, use epcap -- erlang port interface for PCAP: https://github.com/msantos/epcap