Is there a Windows tool for capture and playback of modified UDP packets?

Question

I'm looking for a tool (or a set of tools) for Windows that will perform the following:

1. Capture UDP packets from a specific network interface to a file.
2. Play a stream of packets from a file through a network interface.
3. In addition to 2: replay the original packets to a different host than the original one.

I've already got 1 and 2, but I can't find a tool to do 3.

For capturing I can use Wireshark, for playback Colasoft Packet Player, but I couldn't find a way to change the host the packets are sent to.

The tool should work on Windows XP SP2/3.

Answer 1

The BitTwist (http://bittwist.sourceforge.net) editor commandline program (bittwiste) allows you to change the destination IP address (and port number) amongst other things.

See a similar question (and worked answer) at the Super User site: Replay UDP Packet Capture