Chapter 10. IPv6
An IPv6 address is 128 bits long, a much larger address space than the address space in IPv4. It can provide approximately 3.4 * 10 ^ 38 addresses.
IPv6 addresses are represented as a series of 16-bit fields presented as a hexadecimal number and separated by colons (:). The format used is x:x:x:x:x:x:x:x.
To shorten the writing of IPv6 addresses, you can use the following techniques:
- The leading 0s in a field are optional.
- You can use two colons (::) to compress successive hexadecimal fields of 0s at the beginning, middle, or end of an IPv6 address; this can be done one time in an address (see Figure 10-1).
FIGURE 10-1 IP addresses
The main benefits of IPv6 include the following:
- Has a larger IP ...