The common expressions of IP addresses (commonly used ip v4) that are convenient for people to read and write are similar to:192.5438+068.1.135, that is, four digits separated by decimal points; In fact, in computer machine processing, it is often converted into a 32-bit unsigned long integer; Pay attention to the conversion relationship before and after-four digits separated by decimal points, each of which actually corresponds to each of the 32 digits.

By the way, the length of ipv6 is 128 bits.