IPv6
IPv6 (Internet Protocol version 6) is the latest version of the Internet Protocol, developed to succeed IPv4 primarily to solve the exhaustion of available IP addresses. Where IPv4 uses 32-bit addresses (about 4.3 billion, now effectively used up), IPv6 uses 128-bit addresses, providing an almost unimaginably vast address space — enough to give a unique address to every device many times over.
This huge address space is essential for the Internet of Things, where billions of sensors, trackers, gateways and connected devices each need to be addressable — a scale IPv4 simply cannot accommodate. Beyond addressing, IPv6 also brings improvements in routing efficiency, autoconfiguration and built-in security. Adoption has been gradual, with IPv4 and IPv6 coexisting during a long transition. For connected logistics and IoT, IPv6 is important because it enables the massive scale of device connectivity that smart cargo, vessels and supply chains increasingly rely on. Understanding IPv6 (and why it matters for IoT scale) is useful background for the connectivity underpinning modern logistics technology. It is the addressing foundation for a world of billions of connected things.
The Internet of Things needs to give billions of sensors and devices their own addresses — a scale IPv4's 4.3 billion simply can't reach. IPv6's astronomically larger address space is what makes that possible, so it is the addressing foundation for connecting the smart cargo, vessels and supply chains of the future. It is why IoT at scale can work at all.
Why was IPv6 created?
Mainly to solve IPv4 address exhaustion — IPv6's 128-bit addresses provide a vastly larger space, plus routing and security improvements.
Why does IPv6 matter for IoT?
The IoT needs to address billions of devices individually, a scale only IPv6's enormous address space can accommodate.