2. Terminology

End-User Network: one or more links attached to the IPv6 CE router that connect IPv6 hosts.

IPv6 Customer Edge Router: a node intended for home or small-office use that forwards IPv6 packets not explicitly addressed to itself. The IPv6 CE router connects the end-user network to a service provider network.

IPv6 Host: any device implementing an IPv6 stack receiving IPv6 connectivity through the IPv6 CE router.

LAN Interface: an IPv6 CE router's attachment to a link in the end-user network. Examples are Ethernet (simple or bridged), 802.11 wireless, or other LAN technologies. An IPv6 CE router may have one or more network-layer LAN interfaces.

Service Provider: an entity that provides access to the Internet. In this document, a service provider specifically offers Internet access using IPv6, and it may also offer IPv4 Internet access. The service provider can provide such access over a variety of different transport methods such as DSL, cable, wireless, and others.

WAN Interface: an IPv6 CE router's attachment to a link used to provide connectivity to the service provider network; example link technologies include Ethernet (simple or bridged), PPP links, Frame Relay, or ATM networks, as well as Internet-layer (or higher-layer) "tunnels", such as tunnels over IPv4 or IPv6 itself.