Regarding mac addresses. The simple fact is unless these guys are in contact with Nintendo techs and have been given a white list of MAC addresses being used by them, then they do not know what MAC addresses Nintendo is using.
Sites like these:
http://www.coffer.com/mac_find/
http://standards.ieee.org/develop/regauth/oui/public.html
Are NOT complete or definitive, and were never intended to be. These lists exist as a courtesy, with no guarantees, for people hoping to find information on their queries. These lists only contain publicly listed and known at the time OUI’s that have been entered into the publicly accessible database. They do not include hidden OUI’s (which all companies can request if they want), OUI’s that just haven’t been entered in the public DB yet, or OUI’s still in the pipeline of being processed.
That first link (one marcan posted) hasn’t been updated in nearly 3 years shows only 30 listings for Nintendo. The second list shows 43. Neither list is complete. Half the network gear I have in my house (some of it old, some of it new) doesn’t show up on either of those lists. I’m talking Netgear, Linksys, Cisco, TPLink. So yeah, just because a MAC don’t appear in a public list somewhere doesn’t mean it’s not in use.
There is no reason why they should be trying to protect the users from themselves by limiting what mac addresses can be entered. It serves no purpose because it won’t stop anyone from entering one of the last 3 pairs wrong anyways. So for all their efforts, it won’t stop people from entering a mac that won’t work for them. ALL it does is prevents many WII owners from not being able to use this exploit at all because these guys won’t accept Nintendo is using other MAC’s besides what is on these public lists.