 if more controlled enterprise-style address allocation means are going to be required, or maybe multicast- ing of content directly between end hosts will find commercially viable use cases. The experience that will be gained with widespread IPv6 deployment will undoubtedly also mean that inefficiencies, security issues, and vulnerabilities will be found and addressed in due course. Besides those particular improvements that are perhaps best categorized as IPv6 main- tenance, there will be very interesting new applications that will use IPv6 and bring both growth and significant technical improvements. In this chapter we will talk about five IPv6 related future topics that the authors are finding to be of particular interest, but these five are by no means the only IPv6 related improvements that we will (or we hope to) see in 3GPP networks during the coming exiting years! It should be noted that some of the material presented in this section is rather futuristic and just presents ideas with which the authors have been experimenting. 6.1 IPv6-based Traffic Offloading Solutions The significant improvements in the 3GPP networks' throughput and latency since the introduction of 3rd Generation (3G), and rapid developments in smart phones, has changed usage patterns of 3GPP access. Nowadays users are increasingly using both always-on and data-intensive applications. These applications include social media, instant messaging, Voice over IP (VoIP), and web browsers, which are often extremely data intensive because of transmitting video, audio, and photographs. As a result, the traffic and signaling volume increase that has occurred in the core network side has been phenomenal. Operators are facing tough competition, and profit margin growth is slower than traffic volume growth. At the same time operators have investment needs for cellular core infrastructure, radio Deploying IPv6 in 3GPP Networks: Evolving Mobile Broadband from 2G to LTE and Beyond, First Edition Jouni Korhonen, Teemu Savolainen and Jonne Soininen. © 201