IPv6

Replacement to IPv4. 128-bits for addresses. Supports multiple transmit models:

Broadcast: one-to-all
Multicast: one-to-many
Unicast: one-to-one

Example:

a39b:239e:ffff:29a2:0021:20f1:aaa2:2112

Groups of zeros can be replaced with ::. For example,

0000:0000:0000:0000:0000:0000:0000:0001 → ::1
2345:1001:0023:1003:0000:0000:0000:0000 → 2345:1001:23:1003::
aecb:0222:0000:0000:0000:0000:0000:0010 → aecb:222::10

There are some special addresses:

Localhost, ::1
Link-Local Network, fe80::
Local Network, fc00:: and fd00::
Global Addresses, 2000::