IPv6 Special Addresses - Internet Protocol version 6 (IPv6)

What are the special addresses of IPv6?

The structure of IPv6 is more complex than that of IPv4. Few addresses and address notations are reserved by IPv6 such as:

Special Address Table

  • The address 0:0:0:0:0:0:0:0/128 does not specify anything and is said to be an unspecified address. After simplifying, all the 0s are compacted to ::/128.
  • In IPv4, the default route is represented by the address 0.0.0.0 with netmask 0.0.0.0 and the same goes with IPv6, 0:0:0:0:0:0:0:0 with netmask all 0s represents the default route. Once IPv6 rule is applied, the address gets compressed to ::/0.
  • Loopback addresses in IPv4 are represented by 127.0.0.1 to 127.255.255.255 series. But in IPv6, only 0:0:0:0:0:0:0:1/128 represents the Loopback address. After loopback address, it can be represented as ::1/128.

Reserved Multicast Address for Routing Protocols

Reserved Multicast Routing Address

The reserved multicast addresses used by the interior routing protocol are displayed by this table. The same rules as that of IPv4 are reserved for addresses.

Reserved Multicast Address for Routers/Node

Reserved Multicast Route Nodes Address

The routers and hosts are facilitated to speak to the available routers and hosts on a segment without configuring to the IPv6 address. EUI-64 based auto-configuration is used by hosts for self-configuring an IPv6 address and can communicate with the available hosts/routers by using addressed on the segment.

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Internet Protocol version 6 (IPv6) Topics