Yeh, that's typical for the console homebrew exploits though.
(Or at least control of the resolver - the instructions looks like the author has a exploit server running for ease)
At the very least (beyond the extra TCP DNS fields) you need to ignore/drop the two UDP DNS requests the Wii U makes before failing to TCP.
At the very least (beyond the extra TCP DNS fields) you need to ignore/drop the two UDP DNS requests the Wii U makes before failing to TCP.