I have a DSi and could not connect to my network because it doesn't support WPA. This is nothing new.
I found a lot of guides to set up a wirless network on ubuntu with the hotspot function. Too bad I cannot set it to WEP or open in ubuntu 13.04.
So I went looking and found this really neat guide. But I could not get the dns part working.
So to make it easy there is the ap-hotspot program. I was really exited when I found it. So I did the set up and found out it only supports WPA(again...).
After some looking in to the code I'll show you how to change this to open or WEP. This also works with an android phone!