Because I'm not experienced with Wine and don't know how to use it properly.
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Has anyone managed to get FakeProxy to work? At the moment I can't connect the router to my PC via Ethernet without disconnecting the WAN (which is downstairs) and moving the router to my room (which is upstairs). Earlier I tried connecting the router to my PC (without an Internet connection), starting FakeProxy, setting the 3DS to use a proxy with my PC's IP address and 3000 as port number, but it still defaulted to StreetPass and wouldn't stay connected to the router.