9. Accessing the Internet from a VPN

The methods proposed by [BGP/MPLS-VPN] to access the global IPv4 Internet from an IPv4 VPN can be used in the context of IPv6 VPNs and the global IPv6 Internet. Note, however, that if the IPv6 packets from IPv6 VPN sites and destined for the global IPv6 Internet need to traverse the SP backbone, and that if this is an IPv4 only backbone, these packets must be tunneled through that IPv4 backbone.

Clearly, as is the case outside the VPN context, access to the IPv6 Internet from an IPv6 VPN requires the use of global IPv6 addresses.

In particular, Unique Local IPv6 addresses cannot be used for IPv6 Internet access.