as the evolved bearer. Future of IPv6 in 3GPP Networks The new bearer and connectivity model is incremental to the existing 3GPP EPS with a fallback to bearer types available in the current EPS. Since multi-addressing is natural to IPv6, the enhancements we propose are only available for IPv6. The new bearer and connectivity model inherits the existing IPv4 address-on-a-connection assumption. The IPv4 address is always anchored to the PGW as it is today with EPS Bearers. 6.2.2 Multi-prefix Bearer Solution Proposal Motivation and Design Goals We started to develop the evolved bearer around nine fundamental design goals. These design goals are discussed next: 1) The number of APNs has to decrease. In a long run the need for any end user or a UE requested APN should become extinct. That would definitely have a positive impact on the mobile host design and ease the provisioning of the mobile hosts. 2) Configuring multiple IP addresses/prefixes on a UE should not require an activation of multiple PDN Connections and default bearers. 3) Change of the link model from a strict point-to-point link into an NBMA like link, where multiple routers can appear on the same conceptual link. The routers are logically on the same link but following the NBMA philosophy cannot talk to each other in any other way than using unicast traffic. 4) Not all addresses/prefixes need mobility, which would, with the help of multi- addressing and a new link model, introduce the concept of the simple-IP where certain IP addresses/prefixes are not topologically anchored to the PGW and do not necessarily survive handovers. 5) The UE IP host configuration should only follow IETF standard procedures. We acknowledge that there is a cost with this assertion, since lower layer mechanisms are usually significantly faster to configure an end host. 6) Do not put any effort into enhancing IPv4 functionality. In the evolved bearer concept IPv4 address is still anchored to a PGW and no other intermediate node on the new link can contribute with its own IPv4 a