Hello All, As I only have a Cisco831 capable for setting up the tunnel and IPv6 subnet, and as this device is only 10 Mbps on the WAN port ( Ethernet 1), I don't want to put this router directly on my 20 Mbit internet access. I now have a WRT54 (v7.0 , so can't put a IPv6 supported DD-WRT in it), and I want to keep this connected to my 20 Mbps cable access. WAN ip is obtained via DHCP, nating for the LAN range 192.168.0.x My question is : can I connect the Cisco831 with his 10 mbit WAN port to a LAN port on my WRT54, configuring the Cisco831 for setting up the tunnel ? Can I deactivate IPv4 on the LAN site of the Cisco831 ( Ethernet 0) and only activate IPv6 on the LAN ports and then reconnect one of the Cisco831's LAN ports back to the LAN ports from the WRT54 ? This is kind of a loop : <WRT LAN port1> <WAN port Cisco831> <LAN port Cisco831> <WRT LAN port2> As the WRT's 4 LAN ports can work as a Layer 2 switch, it should be capable of switching the IPv6 router advertisements and other general IPv6 traffic. If my above setup is possible, can someone help met with the Cisco831 config. (I have some knowledge on IOS, but not the full details) In this case I would only have 10Mbps IPv6 access but this is fine to me. Thanks.