Ignore the ND Prefix line, since your router is handling that.
Copy and paste the Delegated Prefix into the "Interface Address / Prefix Length" changing the end from /48 to /64.
You don't need to meddle with settings on the Mac (you may want to restart it, so it doesn't keep addresses from the old prefix). I'm on a Hackintosh running Mavericks and it all just works fine.
Once the Mac gets a new IPv6 address open up a terminal and do:
Text 1 ping6 google.com
and you should see a response. Proceed with any IPv6 tests you wanted to do,
I've put it in - and it's 2a02:8010:8001::/48
still can't access IPv6 When I do the ping command I get this