mxcl/homebrew — pull request #19716 by tinogomes (2013-05-10 14:33:19+00:00)
Title: New Formula: ip_replay

**ip_relay** can shape the TCP traffic forwarded through it to a specified bandwidth and allow this specified bandwidth to be changed on-the-fly. Multiple data streams to different hosts/ports may be shaped to the same total bandwidth, much like a traffic shaping router would, however this application runs in user space, and works by acting as a TCP proxy.

More info at