IPv6
Why there are no new IPv4 jokes? Because they're all exhausted!
Just a messing about page for me. Addresses here are not mine…. Just random ones.
The Google Public DNS IPv6 addresses are as follows:
2001:4860:4860::8888 2001:4860:4860::8844
IPv6 addresses are 128 bits long, split up into groups of 16 bits which are represented by 4 Hexadecimal digits seperated by a : . Continous double octet groups with only 0000's can be replaced with :: .
An address is broken down into 3 parts, the Network Address, the Subnet Address, and the Device Address.
The Network Address is the first 48-bits of the address which is the first three blocks of four hex digits.
The Subnet address is the next group of 16 bits or one double octet.
The device address is unique to the host and comprises the rest of the ipv6 number, 64 bits or four blocks.
Example:-
Allocation split in to two large subnets.
| Network Address 48 bits | Subnet 16 bits | Host Address 64 bits | Network Length |
|---|---|---|---|
| 2001:08B0:FF92 | 0000 | 0000:0000:0000:0000 | /48 |
| 2001:08B0:FF92 | 1000 | 0000:0000:0000:0000 | /52 |
| 2001:08B0:FF92 | 0100 | 0000:0000:0000:0000 | /56 |
| 2001:08B0:FF92 | 0010 | 0000:0000:0000:0000 | /60 |
| 2001:08B0:FF92 | 0001 | 0000:0000:0000:0001 | /64 |
Subnet Binary 1000-0000-0000-0000 = 0x8000 hex
