"pktsrc [L1 ] is a Tcl package that adds support for sending and receiving raw packets from Tcl scripts. The packets are considered 'raw' since they the are not sent through the host's full IP stack. This allows a Tcl script to
generate and receive any packet, regardless of MAC address, IP address, TOS, etc. pktsrc was designed for the IP testing world, but it has many potential applications. It enables full access to network interfaces from a simple scripting environment. This version only supports Ethernet interfaces."