tion), is a digital wireless telephony technology originally developed by ETSI and maintained by 3GPP since 1998. The technologies before 2G, the so-called '1G' technologies, were analog systems. 3G Direct descendant from 2G and the first release made by 3GPP. 3G effectively brought improvements to speed and also introduced IPv6 for both 2G and 3G. 4G and LTE The 3GPP release-8 introduced the Evolved Packet System (EPS), which consists of Long Term Evolution (LTE) radio and Evolved Packet Core (EPC) network core. The whole system is referred to as 4G or LTE, depending on the source. 6bone A global IPv6 technology testbed that ran from 1996 to 2006. The 6bone network was mostly a virtual network run over the global Internet infrastructure to connect different IPv6 test networks. The purpose of this experiment was to test the interop- erability of the IPv6 technology and the transition mechanism, and gather operational experience. The experiment was designed to be temporary from the start, and it was to be replaced by the Internet itself becoming IPv6 capable. The experiment officially ended on 6 June 2006 (6.6.6) when the routing of the experimental addresses ceased. A resource record A DNS record type that contains one 32-bit IPv4 address, which maps to a hostname. Used to find an IPv4 address for a hostname. AAAA resource record A DNS record type that contains one 128-bit IPv6 address, which maps to a hostname. Used to find an IPv6 address for a hostname. Access Point Name (APN) Name of an access point in the 3GPP system. The APN points to an external network or service. The APN has two parts: the network identifier and the operator identifier. The structure of APN follows those of fully qualified domain names, which eventually resolves to an IP address of a GGSN or a PGW. The operator identifier part of an APN is not usually visible to the end user, and if absent can be filled by the network (e.g., by SGSN) during connection establishment. Address autoconfiguration Hosts can automatically configure IPv6 address