However, it becomes impractical to represent this in dotted-decimal notation. Instead, a special hexidecimal system will be used. Hex field represents 16 bits. Other Improvements with IPv6 More address space is NOT the only motivation. IPv4 is very limited in certain ways.
Some functions have very high overhead.
Other functions do not take advantage of current technologies. IPv6 provides these functions, and more. Subnetwork of subscriber. The IPv6 datagram will also be different. This header will not change, regardless of what occurs in the data field.