libdnet 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 (IP filter, ipfw, ipchains, pf, PktFilter, ...) * network interface lookup and manipulation * IP tunnelling (BSD/Linux tun, Universal TUN/TAP device) * raw IP packet and Ethernet frame transmission