In Animal Crossing: New Leaf's Dream Suite, Luna keeps telling me that I can't dream because of an unstable internet connection. I am connected to the Internet on my 3DSXL and can use other networked games and apps just fine. I can download items from the post office just fine as well. I don't have anyone on my friend list whom I can pay a visit to over the internet, so I can't test that. My network data is also up to date as well.
What are the network requirements for Animal Crossing: New Leaf?