Cannot get incoming traffic on tunnel.

[Azendale]

I don't know for sure what happened, but I wrote ipv6@he.net before I left for work this morning, and they wrote me back saying please retest a few hours later. After that, the tunnel just started working.

I did have unassigned parts of my /48 picked up by the default route and therefore going in a routing loop (which was a totally separate problem). Fixed that also. Cholzhauer mentioned this, but I didn't get it at first. So, now not only is my problem fixed, it's working better than before. :)