packETH

http://packeth.sourceforge.net/

packETH - ethernet packet generator

packETH is a Linux GUI packet generator tool for ethernet. It allows you to create and send any possible packet or sequence of packets on the ethernet. For version 1.6 also Windows port was done (thanks to Soni!!! more info on http://eth.cyberine.com/ )

!!!!NEWS!!!! (6.1.2010): packETH finaly became IPv6 packet generator tool.
IPv6 protocol added, with some basic features. Many buttons not working yet, neither ICMPv6 protocol
But you can make a TCP or UDP packet over IPv6 and send it on the link. See the screenshot below.

address database example
192.168.1.16,00:10:4c:ca:fe:05,my_pc