I have a TZ210W and curious what SonicOS I need to set up IPv6 at home. I saw this https://www.fuzeqna.com/sonicwallkb/consumer/kbdetail.asp?kbid=8882 but I don't even see "Under View IP Version select radio button IPv6 to view the IPv6 interface."
I am on a DHCP address from Cox....so not sure if that is a limiting factor. I am running a BETA SonicOS SonicOS Enhanced 5.8.1.3-1o.
Did you see this thread?
http://www.tunnelbroker.net/forums/index.php?topic=1999.0
It mentions the same link that you do, but the poster was able to get it working eventually (although he has a NSA 240)