Emulator

What's the problem? Describe what went wrong in few words.

Dolphin is now banned from custom servers (http://wiimmfi.de/) because it uses the same console identification (not the MAC address) for every player. So custom WFC is now closed for Dolphin users.

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have known issues and bugs, so don't report issues about them and test the latest Dolphin version first.
Which versions of Dolphin did you test on?

Lastest version (4.0-1857).

Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

No.

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
[Upload big files to a hosting service and post links here!]

See here : http://forum.wii-homebrew.com/board42-kreativitaet/board329-mkw-server-project-english/51720-about-banning/index12.html#post598037

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