InstantRails 2.0 and Mongrel Server

I am puzzled as to why the following screen-shot displays the IP address of localhost as 0.0.0.0 instead of 127.0.0.1?

C:\InstantRails20\rails_apps\blog>ruby script/server => Booting Mongrel (use 'script/server webrick' to force WEBrick) => Rails application starting on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server ** Starting Mongrel listening at 0.0.0.0:3000 ** Starting Rails with development environment... ** Rails loaded. ** Loading any Rails specific GemPlugins ** Signals ready. INT => stop (no restart). ** Mongrel 1.1.2 available at 0.0.0.0:3000 ** Use CTRL-C to stop. ** INT signal received. Exiting

It works though. The Rails screen comes up when I type in:

http://localhost:3000/