Tunnel routing not working

Hi,

I have setup my first tunnel, so this could be a noob error.

I can ping the tunnel server and v6 DNS server from my router, but I cannot ping he.net or ipv6.google.com.
From my LAN assigned /64 I can ping my router, but not the tunnel server, so I think I have a routing issue.

Ping tests below
ping tunnel server
dsl-1#ping 2001:470:1F08:17C7::1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:470:1F08:17C7::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/37/40 ms
adsl-1#

ping v6 dns
adsl-1#ping 2001:470:20::2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:470:20::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/40/44 ms
adsl-1#

ping he.net
adsl-1#ping 2001:470:0:76::2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:470:0:76::2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

ping ipv6.google.com
adsl-1#ping 2a00:1450:400c:c00::67

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2A00:1450:400C:C00::67, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
adsl-1#

Cisco config snippets below

ipv6 unicast-routing
ipv6 host HE 2001:470:1F08:17C7::1
ipv6 cef
ipv6 dhcp pool IPv6DHCPPOOL
dns-server 2001:470:20::2
!
interface Tunnel0
description Hurricane Electric IPv6 Tunnel Broker
ip address 84.92.29.138 255.255.255.254
ipv6 address 2001:470:1F08:17C7::2/64
ipv6 enable
tunnel source 84.92.29.138
tunnel destination 216.66.80.26
tunnel mode ipv6ip
!
interface Ethernet0
ip address 192.168.200.254 255.255.255.0
ip nat inside
ip virtual-reassembly
ipv6 address 2001:470:1F09:17C7::/64 eui-64
ipv6 enable
ipv6 nd other-config-flag
ipv6 dhcp server IPv6DHCPPOOL
no cdp enable
hold-queue 100 out
end
ipv6 route ::/0 2001:470:1F08:17C7::1 (was tunnel 0, but had some problem)

Any help would be greatly appreciated

Trev