IPv6
Created: September 19, 2020
Unicast Addresses
Link-Local and Special Purpose Addresses
| Address |
Name |
Description |
::/0 |
Default route. |
|
::/128 |
Unspecified address. |
|
::1/128 |
Loopback. |
::1 is the standard loopback address. |
::ffff:0:0/96 |
IPv4 mapped addresses. |
|
::ffff:0:0:0/96 |
IPv4 translated addresses. |
|
64:ff9b::/96 |
IPv4/IPv6 translation |
|
100::/64 |
Discard prefix. |
|
fc00::/7 |
Unique Local Address (ULA).* |
Routable only within the scope of private networks. |
fe80::/10 |
Link-local addresses. |
Not routable outside the originating subnet. |
fe80::1 |
Standard default gateway. |
The default gateway should normally be this link local-address. |
* In theory, in the global scope.
Global Unicast Addresses: 2000::/3
| Address |
Description |
2000::/3 |
Global Unicast. The entire address space except the below exceptions. |
2001:0000::/32 |
Teredo. IPv6 tunneling through IPv4 NATs using a mapped address. |
2001:0002::/48 |
Benchmarking and documentation use only. |
2001:20::/28 |
The ORCHID2 experiment. Not routable. |
2002::/16 |
Previously used for the now legacy 6to4 gateway system. |
2001:db8::/32 |
Examples and documentation only. |
Multicast Addresses: ff00::/8
| Address |
Purpose |
ff00::/8 |
Multicast address range. |
ff00::/16, ff0f::/16 |
Reserved. |
ff01::/16 |
Multicast loopback. |
ff02::/16 |
Link-local scope. |
ff03::/16 |
Realm-local scope. |
ff04::/16 |
Admin-local scope. |
ff05::/16 |
Site-local scope. |
ff08::/16 |
Organisation-local scope. |
ff0e::/16 |
Global-scope. |
Well-Known IPv6 Multicast Addresses
| Address |
Description |
ff01::1 |
All nodes in the interface-local scope. |
ff02::1 |
All nodes in the link-local scope. |
ff01::2 |
All routers in the interface-local scope. |
ff02::2 |
All routers in the link-local scope. |
ff05::2 |
All routers in the site-local scope. |
ff02::5 |
OSPFIGP (link-local). |
ff02::6 |
OSPFIGP designated routers (link-local). |
ff02::8 |
IS-IS for IPv6 routers (link-local). |
ff02::9 |
RIP routers (link-local). |
ff02::a |
EIGRP routers (link-local). |
ff02::d |
PIM routers (link-local). |
ff01::fb |
Multicast DNS in the interface-local scope. |
ff02::fb |
Multicast DNS in the link-local scope. |
ff03::fb |
Multicast DNS in the realm-local scope. |
ff04::fb |
Multicast DNS in the admin-local scope. |
ff05::fb |
Multicast DNS in the site-local scope. |
ff08::fb |
Multicast DNS in the organisation-local scope. |
ff0e::fb |
Multicast DNS in the Internet scope. |
ff01::101 |
All NTP servers in the interface-local scope. |
ff02::101 |
All NTP servers in the link-local scope. |
ff03::101 |
All NTP servers in the realm-local scope. |
ff04::101 |
All NTP servers in the admin-local scope. |
ff05::101 |
All NTP servers in the site-local scope. |
ff08::101 |
All NTP servers in the organisation-local scope. |
ff0e::101 |
All NTP servers in the Internet scope. |
ff02::1:1 |
Link name (link-local). |
ff02::1:2 |
All-dhcp-agents (link-local). |
ff05::1:3 |
All-dhcp-servers (site-local). |
ff02::1:ff00:0/104 |
Solicited-node multicast address. |
IPv6 Address Precedence
| Prefix |
Precedence |
Label |
Usage |
::1/128 |
50 |
0 |
Localhost |
::/0 |
40 |
1 |
Default unicast |
::ffff:0:0/96 |
35 |
4 |
IPv4-mapped IPv6 address |
2002::/16 |
30 |
2 |
6to4 |
2001::/32 |
5 |
5 |
Teredo tunneling |
fc00::/7 |
3 |
13 |
Unique local address |
::/96 |
1 |
3 |
IPv4-compatible addresses (deprecated) |
fec0::/10 |
1 |
11 |
Site-local address (deprecated) |
3ffe::/16 |
1 |
12 |
6bone (returned) |
- Only a default, can be overridden on routers.
Sources