We implement the multihoming route control functions discussed above by extending a simple open source Web proxy called TinyProxy [3]. TinyProxy is a transparent, non-caching forward Web proxy that manages the performance of Web requests made by clients in a moderately-sized, multihomed enterprise. Below, we present the details of our implementation of the three basic multihoming components in TinyProxy. For the sake of simplicity, we assume that the proxy is being employed by a multihomed end-network with three ISP links.