In your accompanying glossary, the entry for “IP” reads:
Internet protocol: a protocol used for communicating data across a packet-switched internetwork using the Internet Protocol Suite (TCP/IP). The first major version of addressing structure, Internet Protocol Version 4 (IPv4), remains the dominant protocol of the Internet, although the successor, Internet Protocol Version 6 (IPv6) is actively deployed worldwide.

It might be worthwhile to revisit the claim that IPv6 is “actively deployed worldwide.” Even in the handful of countries where IPv6 is implemented in any non-research capacity (e.g., China, Japan, France, the US to a much lesser degree…), this statement would be grossly misleading. Today, IPv6-based Internet access is absolutely unavailable to all but a small minority of enterprises in the aforementioned countries — and it is even less accessible to individual/”retail” Internet participants. At present, Google is the only major online content provider to make their core resources available to IPv6-connected users. A recent and fairly exhaustive overview of the current state of deployment is available here:

http://www.ripe.net/ripe/meetings/ripe-57/presentations/Doering-IPv6_Routing_Table_Overview.JffL.pdf

Given the fact that the older (IPv4) address pool is not yet completely depleted, one might be tempted to assume that the still-trivial levels of IPv6 deployment will jump dramatically once there is no easy recourse to the older, more familiar and developed standard. Alas, IPv6 is not independently backwards compatible with the IPv4-based Internet, which today is synonymous the (whole) Internet. In technical terms, that means that those who do not also have independent access to IPv4 addresses will not be able to independently interoperate with, or derive any benefit from, the existence of the built Internet as it is today.

Some people have suggested that incumbent IPv4-based Internet service providers will be happy to serve as brokers, or middlemen, or external providers of commercial “gateways services” between the established Internet and all future new entrants — but such requirements will effectively preclude the very possibility of new entry in the market for Internet service provision itself.