The Installer adds a script to the StartupItems folder that adds all listed routing instructions during system startup. So the Mac needs a reboot after storing new routings.

Pressing the reset button restores the settings to the latest store action.

Pressing the commit button writes the content of the edit line back to the additional routings table.

Use „+“ and „-“ to add or delete lines from the routing table.

If you added a new routing line it will be preset to  „add route“ .. You HAVE to change this to a valid routing instruction.

If you are not familiar with tcp/ip routing refer to this.

If your Mac shows strange performance after you changed routing, you should remove the /Library/StartupItems/AddRoutes folder or reinstall the application.