[c-nsp] 6to4 relay router setup

[matthew zeier]

Has anyone sample configs (other than CCO) for setting up a 6to4 relay router? 
  What I gleaned off CCO today isn't working.

My relay router is currently doing v6 via three bgp peers.  I'd like to offer 
local customers a local 6to4 relay and have the following configuration:

  interface Tunnel2002
  description 6to4 relay service
  no ip address
  no ip redirects
  ipv6 address 2002:C058:6301::/128
  ipv6 enable
  tunnel source Loopback2002
  tunnel mode ipv6ip 6to4
  no clns route-cache

interface Loopback2002
  description 6to4 IPv4 Relay anycast address
  ip address 192.88.99.1 255.255.255.0
  no clns route-cache

ipv6 route 2001:5A0:101::/48 Null0
ipv6 route 2001:1990::/32 Null0
ipv6 route 2002::/16 Tunnel2002

My test client router has the following config:

interface Loopback0
  ip address 216.23.160.253 255.255.255.255

interface Tunnel0
  no ip address
  no ip redirects
  ipv6 address 2002:D817:A0F0::1/128
  ipv6 enable
  tunnel source Loopback0
  tunnel mode ipv6ip 6to4

ipv6 route 2002::/16 Tunnel0
ipv6 route ::/0 2002:C058:6301::


tun0 shows up on client router.  On the relay router destination shows as 
UNKNOWN.  I'm unable to ping from client to relay.

What am I missing?