Gee, I wonder why it hasn’t taken off in a lot of businesses.

https://www.xda-developers.com/ipv4-meant-dead-happening-ipv6/?fbclid=IwY2xjawKWoFFleHRuA2FlbQIxMQABHtBDynInwQ8D1EFVpTI0JBqEx4l1MnYj9e0Z0aFyZcb0Mijig1fppENRb8Qj_aem_LQC6WNvelQrQ9iokI0fNUw

In the early 1990s, internet engineers sounded the alarm: the pool of numeric addresses that identify every device online was not infinite. IPv4, the fourth version of the Internet Protocol, used 32-bit addresses, about 4.3 billion unique numbers, which, at the dawn of the internet, seemed unimaginably large. Yet as the internet exploded in the 1990s and 2000s, experts predicted those addresses would soon run out. A new protocol, IPv6, was devised and hailed as the solution, with exhaustion of IPv4 addresses leading many to expect IPv4′s replacement within a decade. Fast-forward to today, fourteen years after IANA exhausted its unassigned pool of IPv4 addresses, and IPv4 is still very much alive, while IPv6 adoption has been a slow uphill climb.

As previously discussed in this post, Xiong’an New Area (Xiong’an), a pilot city established in 2017 about 100 kilometres west of Beijing, aims to be a model for future digital cities, built with IPv6-only infrastructure from the start. To achieve this, the local government is prioritizing IPv6 in its top-level planning, designing for the deployment of 198,000 sensors per square kilometre, and supporting over 1 million Internet of Things (IoT) devices per square kilometre. This post will look at the lessons the Xiong’an team has learned so far from building this IPv6-only city.