Duft - Datagrams and Udp For Tcl
Found at: http://sourceforge.net/projects/duft/
Description from the doc/duft.txt file:
Duft does datagrams:
Domains: inet, inet6. Types: datagram, raw. Send data to possibly connected sockets. Events or polling. Multicasting. Extensive configuration. Multifaceted Tcl interface.
Stu 2012-08-21 Initial development version.