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Python Web Development with Sanic
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One of the common issues that exist with IPv4 addresses is that there aren’t enough public IPv4 addresses to assign for each unique device that is connected to the internet, whether these devices are on private networks within organizations or directly connected to the internet. As you learned in Chapter 4, IPv4 and IPv6 Addressing, each device that is directly connected to the internet must be assigned a unique IP address. Furthermore, there are 232 public IPv4 addresses, which is 4,294,967,296 public IPv4 addresses that are routable on the internet. This number seems to be a lot, but in reality, most of these devices have already been assigned on the internet and the remainder is reserved by various organizations for special uses.
In our world today, there are more than 4 billion devices that are connected to the internet. How is it possible to have more devices online but not enough public IPv4 addresses? The answer lies in private...