Anyone have IPv6 working with router-behind-router/DMZplus mode?
I have an IPv6-enabled 3600HGV U-verse router with a Linksys E4200 configured as the DMZplus device behind it (for Wireless-N and IPv6 Firewall configuration). DHCPv6 is enabled on the 3600. The E4200 is set for automatic IPv6 configuration. While the E4200 status page show that it gets its own global unicast IPv6 address, the gateway address is a unique local address (fd02:..) and the devices on the network behind the E4200 only get an IPv6 unique local address (fd02:...) instead of a global unicast address (2602:306:...) in addition to their link-local address (fe80:...). Consquently the IPv6 addresses are not routable so I can't get to external IPv6 sites with this configuration.
If I connect my local network directly to the 3600HGV the IPv6 network works properly for outbound connections, but I haven't found a way to configure the firewall to permit incoming IPv6 connections to pass through to the addressed device. The firewall looks like it only supports IPv4 port forwarding.
Has anyone workout out how to get IPv6 autoconfiguration working to assign global unicast addresses to devices on the network behind a router that is behind the U-verse router? Alternatively does anyone know how to poke a hole in the U-verse firewall to permit an IPv6 connection to pass through to a specific port on the IPv6 device?
I need both inbound and outbound IPv6 connections to work on software development for a site that has only IPv6 access to devices behind their firewall (a HughesNet Gen4 customer with a router-behind-router with which IPv6 autoconfiguration works properly). A Hurricane Electric tunnel provided the necessary functionality with my previous DSL service, but apparently the 3600HGV blocks this. Thanks in advance for any insights.