Python wrapper around libdnet which provides a simplified, portable
interface to several low-level networking routines, including network
address manipulation, kernel arp(4) cache and route(4) table lookup and
manipulation, network firewalling, network interface lookup and
manipulation, and raw IP packet and Ethernet frame transmission. It is
intended to complement the functionality provided by pcap(3).

WWW: http://libdnet.sourceforge.net/