[Ezekiel Annan Okoe]

IPv4 has persisted for decades due to the implementation of techniques like CIDR, NAT and other address-conservasion strategies, which extended its usability well beyond original expectations. However, the rapid and exponential growth of internet-connected devices and user demand was not anticipated in the initial design. As a result, IPv4 cannot indefinitely support the scale required by modern and emerging technologies, making its continued use fundamentally unsustainable.