I can now say that i know i can get IPv6.
I've done it on PFSense firewall.
But i can't still get it to work on the Zywall.
The latest firmware on ZyWALL 110 is V4.35 Patch3 .
If you’re still using ZyWALL 110 we can help you to check the settings on setup IPV6.
I'm on the latest firmware version - 4.35(AAPH.3)
I would be happy if i could get IPv6rd working :)