61, Internet Engineering Task Force, July 1994. 15. 3GPP. General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access. TS 23.401, 3rd Generation Partnership Project (3GPP), March 2012. 16. 3GPP. Architecture enhancements for non-3GPP accesses. TS 23.402, 3rd Generation Partnership Project (3GPP), March 2012. 17. Baker, F. and Savola, P. Ingress Filtering for Multihomed Networks. RFC 3704, Internet Engineering Task Force, March 2004. 18. 3GPP. Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access networks; Stage 3. TS 24.302, 3rd Generation Partnership Project (3GPP), September 2011. 19. 3GPP. Mobility management based on Dual-Stack Mobile IPv6; Stage3. TS 24.303, 3rd Generation Part- nership Project (3GPP), September 2011. 20. 3GPP. Mobility management based on Mobile IPv4; User Equipment (UE) - foreign agent interface; Stage 3. TS 24.304, 3rd Generation Partnership Project (3GPP), April 2011. 21. Hinden, R. and Deering, S. IP Version 6 Addressing Architecture. RFC 4291, Internet Engineering Task Force, February 2006. 22. Thomson, S., Narten, T., and Jinmei, T. IPv6 Stateless Address Autoconfiguration. RFC 4862, Internet Engineering Task Force, September 2007. 23. Thaler, D., Talwar, M., and Patel, C. Neighbor Discovery Proxies (ND Proxy). RFC 4389, Internet Engi- neering Task Force, April 2006. 24. Narten, T., Nordmark, E., Simpson, W., and Soliman, H. Neighbor Discovery for IP version 6 (IPv6). RFC 4861, Internet Engineering Task Force, September 2007. 25. 3GPP. Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN). TS 29.061, 3rd Generation Partnership Project (3GPP), December 2011. 26. Droms, R., Bound, J., Volz, B., Lemon, T., Perkins, C., and Carney, M. Dynamic Host Configuration Protocol for IPv6 (DHCPv6). RFC 3315, Internet Engineering Task Force, July 2003. 27. Troan, O. and Droms, R. IPv6 Prefix Options for Dynamic Host Configuration Protocol (DHCP) version 6. RFC 