IPv6 6to4 on Windows Server

dhcpipv6windows-server-2008-r2

I'm looking for a relatively simple guide to setting up an IPv6 tunnel properly.

This network currently has a server (Windows Server 2008R2) running RRAS that establishes connectivity to the internet using a demand-dial PPPoE connection and handles the NAT. It also hosts a DNS server and DHCP. My ISP does not support IPv6, but I have a static IPv4 address.

I've read about 6to4 and signed up at tunnelbroker.net, but quickly felt out of my depth. How do I configure my network to use it, and how I should configure my DHCP server with regards to IPv6 addresses?

Best Answer

I cannot test with Server 2008, but the following should work:

To add a tunnel from command line, run netsh and type:

interface ipv6

add v6v4tunnel Tunnelbroker localaddr=<local_v4_address> remoteaddr=<tunnel_v4_endpoint>

add address Tunnelbroker address=<client_v6_endpoint>
add address Tunnelbroker address=<routed_prefix>:1 

add route ::/0               interface=Tunnelbroker            publish=yes
add route <routed_prefix>/64 interface="Local Area Connection" publish=yes

set interface Tunnelbroker            forwarding=enabled
set interface "Local Area Connection" forwarding=enabled advertise=enabled

Replace <local_address> with the server's IPv4 address (the external one in your case with PPPoE, internal if the server itself is behind a NAT).

Replace <tunnel_endpoint> with the IPv4 address of your tunnel's server endpoint (given in the Tunnelbroker tunnel info page).

Replace <prefix> with your tunnel's IPv6 "Routed /64" prefix, for example, 2001:470:1f0b:614:: (given in the tunnel info page).

This only configures IPv6 Stateless Autoconfiguration. After the tunnel is created (the first 3 commands might be enough), you should be able to create DHCPv6 scopes in the DHCP management console. Someone who can test it on Server 2008 should expand this part...

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