From DD-WRT Wiki
Only is possible have a ipv6 conection with sixx tunnel broker? if i need another as freenet i must be install tspc client and other things?
 tunnel broker and the radvd prefix line
When using hurricane engine tunnel broker, I believe that the radvd.conf prefix line should be changed FROM:
... prefix 0:0:0:1::/64 ...
... prefix"2001:470:1f0f:5cd::/64" # change me ...
where the address is same as MY_ROUTED_ADDR, being the "Routed /64" on the Tunnel Details page on HE's website
At least this seems to work for me. Thoughts?