Can't find anything that specifically addresses my issue for my thick old brain so here goes.
1. My IPV6 test client
A. Is running Centos 6.2 and uname -a returns following:
Linux mythbox.ladodomain 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux
B. Has /etc/sysconfig/network setup as follows:
NETWORKING=yes
HOSTNAME=mythbox.ladodomain
GATEWAY=192.168.2.1
NETWORKING_IPV6=yes
IPV6FORWARDING=yes
IPV6_AUTOCONF=no
IPV6_AUTOTUNNEL=yes
C. Has /etc/sysconfig/network-scripts/ifcfg-br0 setup as follows:
DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes
DELAY=0
NM_CONTROLLED=no
IPADDR=192.168.2.201
NETMASK=255.255.255.0
IPV6INIT=yes
IPV6ADDR=2001:470:1f10:115d::2/64
IPV6_DEFAULTGW=2001:470:1f10:115d::1
D. Has /etc/sysconfig/network-scripts/ifcfg-eth0 setup as follows:
DEVICE="eth0"
NM_CONTROLLED="no"
ONBOOT=yes
HWADDR=00:1D:60:9C:B8:1D
TYPE=Ethernet
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
BRIDGE=br0
E. Has had the following commands run on it
ifconfig sit0 up
ifconfig sit0 inet6 tunnel ::209.51.181.2
ifconfig sit1 up
ifconfig sit1 inet6 add 2001:470:1f10:115d::2/64
route -A inet6 add ::/0 dev sit1
F. Has iptables rule for INPUT table which reads as follows:
iptables -A INPUT -p 41 -j ACCEPT
2. The router is a LINKSYS WRT300N v1.1 running DD_WRT firmware v24_sp2 mini and has the following iptables rules.
iptables -A INPUT -p 41 -d $WanIp -j ACCEPT
iptables -t nat -A PREROUTING -p 41 -d $WanIp -j DNAT --to 192.168.2.201
iptables -A FORWARD -p 41 -j ACCEPT
I've read and reread the guides and googled a ton. I know I am missing something painfully simple. Thanks for the help.
Bob