The document discusses how IPv6 is critical for enabling the Internet of Things (IoT). IoT refers to connecting everyday objects like cows, shoes and trees to the Internet. It is driven by technologies like RFID, sensors and smartphones. However, IoT will require a huge number of IP addresses as these devices communicate over IP networks. IPv6 is needed because it provides over 340 trillion trillion trillion addresses, whereas IPv4 only provides 4.3 billion addresses. IPv6 will allow IoT to scale enormously and provide end-to-end connectivity for billions of devices. While challenges remain around privacy, security and standards, IPv6 is key to realizing the full potential of a world with 50 billion Internet-connected things by 2020