Cisco router cannot establish a Tunnel connection

[jilingshu]

Hi all,
I have configured my cisco router to establish a IPv6 tunnel to TunnelBroker. However, all clients, include the router itself, cannot ping any IPv6 address outside of our internal network. Every ICMP request are timeout.

I enabled 'debug tunnel' in router, try to ping a outside IPv6 address and got this:
Apr  9 05:32:23.863: Tunnel1: IPv6/IP encapsulated xxxxx->66.220.18.42 (linktype=79, len=76)
Apr  9 05:32:23.863: Tunnel1 count tx, adding 20 encap bytes
Apr  9 05:32:24.863: Tunnel1: IPv6/IP encapsulated xxxxx->66.220.18.42 (linktype=79, len=76)
Apr  9 05:32:24.863: Tunnel1 count tx, adding 20 encap bytes
Apr  9 05:32:25.863: Tunnel1: IPv6/IP encapsulated xxxxx->66.220.18.42 (linktype=79, len=76)
Apr  9 05:32:25.863: Tunnel1 count tx, adding 20 encap bytes

When other IPv6 host pinged the router, I got:
Apr  9 05:32:31.291: Tunnel1: IPv6/IP to classify 66.220.18.42->xxxxxx (tbl=0,"default" len=120 ttl=245 tos=0x0) ok, oce_rc=0x1
Apr  9 05:32:31.291: Tunnel1: IPv6/IP (PS) to decaps 66.220.18.42->xxxxxx (tbl=0, "default", len=120, ttl=245)
Apr  9 05:32:31.291: Tunnel1: decapsulated IPv6/IP packet (len 120)
Apr  9 05:32:33.287: Tunnel1: IPv6/IP to classify 66.220.18.42->xxxxxx (tbl=0,"default" len=120 ttl=245 tos=0x0) ok, oce_rc=0x1
Apr  9 05:32:33.291: Tunnel1: IPv6/IP (PS) to decaps 66.220.18.42->xxxxx (tbl=0, "default", len=120, ttl=245)
Apr  9 05:32:33.291: Tunnel1: decapsulated IPv6/IP packet (len 120)
Apr  9 05:32:35.287: Tunnel1: IPv6/IP to classify 66.220.18.42->xxxxx (tbl=0,"default" len=120 ttl=245 tos=0x0) ok, oce_rc=0x1
Apr  9 05:32:35.287: Tunnel1: IPv6/IP (PS) to decaps 66.220.18.42->xxxxx (tbl=0, "default", len=120, ttl=245)
Apr  9 05:32:35.287: Tunnel1: decapsulated IPv6/IP packet (len 120)

Also time out... :-(

interface Tunnel1
description Hurricane Electric IPv6 Tunnel Broker
no ip address
ipv6 address 2001:470:xxxxxx::2/64
ipv6 enable
tunnel source Dialer1
tunnel mode ipv6ip
tunnel destination 66.220.18.42

[cholzhauer]

Let's see your config.

Please do not obfuscate IP addresses.

Did you enable IPv6 multicast routing?