Submission + - In 2010 the World Runs Out Of IPv4 Addresses (arstechnica.com) 1
Either by choice or otherwise, the big ISPs will soon have to stop giving each customer an IPv4 address of his or her own. Giving those customers just IPv6 is not an option, as the majority of the services are still IPv4-only and many IP-capable devices that don't run a full operating system (smartphones, VoIP phones, webcams) don't support IPv6. So that means stretching the existing IPv4 addresses in some way through "carrier grade NAT" (CGN).
Assuming the ISPs don't strip people of their current IPv4 address, Apple users may be in the best shape.