Svpe has been using the recent developments in homebrew and have created a loader that loads stuff over TCP.
It is a TCP server running on the Wii that listens on port 8080 by default that will run any binary that is sent to it. Both DOL and ELF executables are supported. There is no IP address display in the Wii part.
This is a very great thing, considering the fact that certain devices can be modified and updated through TCP, the Wii should not be an exception.
Source if u are interested