.1 IPv6 Addressing Threats 4.10.2 IPv6 First-hop Security 4.10.3 IPv6 Extension Header Exploits Chapter Summary References IPv6 Transition Mechanisms for 3GPP Networks Motivation for Transition Mechanisms 5.1.1 Phasing the Transition Technology Overview 5.2.1 Translation 5.2.2 Encapsulation 5.2.3 Mesh or Hub-and-spoke 5.2.4 Scalability Concerns Transition Toolbox 5.3.1 Transition Solutions Not Included Contents 5.3.2 Dual-stack 5.3.3 NAT64 and DNS64 5.3.4 464XLAT 5.3.5 Bump-In-the-Host 5.3.6 Mapping Address and Port Number 5.3.7 Other Tunneling or Translation Based Transition Mechanisms Transition Scenarios for 3GPP 5.4.1 Transition Scenario Evolution 5.4.2 Dual-stack 5.4.3 IPv6-only 5.4.4 Double Translation Transition Impacts on 3GPP Architecture 5.5.1 Transition Impact on the Supporting Infrastructure 5.5.2 IP Network Support Systems 5.5.3 Tools to Divide Subscribers Per IP Capability 5.5.4 Translation Implications 5.5.5 Transition Support in the Transport Plane 5.5.6 Roaming 5.5.7 Impact of Delayed Transition to IPv6 Transitioning to IPv6 5.6.1 Application Developer's Transition Plan 5.6.2 Phone Vendor's Transition Plan 5.6.3 Network Operator's Transition Checklist Chapter Summary References Future of IPv6 in 3GPP Networks IPv6-based Traffic Offloading Solutions 6.1.1 Motivations in Cellular Networks 6.1.2 Benefits of IPv6-based Offloading Approaches 6.1.3 IP-friendly Offloading Solutions 6.1.4 Concluding Remarks Evolving 3GPP Bearers to Multiple Prefixes and Next-hop Routers 6.2.1 Background and Motivation 6.2.2 Multi-prefix Bearer Solution Proposal 6.2.3 Overall Impact Analysis 6.2.4 Open Issues and Future Work LTE as the Uplink Access for Home Networks 6.3.1 Homenet at IETF 6.3.2 Homenet and 3GPP Architecture 6.3.3 Additional 3GPP Deployment Options Port Control Protocol 6.4.1 Deployment Scenarios 6.4.2 Protocol Features 6.4.3 PCP Server Discovery 6.4.4 Protocol Messages Contents 6.4.5 Cascaded NATs 6.4.6 Relation to IPv6 Transition Internet of Things 6.5.1 Typical Use Cases 6.5.2 Standardization Organizati