IPv6 Addresses Assigned to Hosts and Routers
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2
An IPv6 host, including those with only one interface, typically has multiple IPv6 addresses. By default, link-local addresses are automatically configured for each interface on each IPv6 host or router. To communicate with non-neighboring nodes, a host must also be configured with unicast site-local or global addresses. A host obtains these additional addresses either from router advertisements or by manual assignment. Use commands in the netsh interface ipv6 context to manually configure IPv6 addresses.
In IPv6, hosts and routers are typically assigned the following addresses:
Unicast addresses:
A link-local address for each interface
A site-local address for each interface
One or more global addresses for each interface
The loopback address for the loopback interface
Multicast addresses (to listen for multicast traffic):
The interface-local scope all-nodes address (FF01::1)
The link-local scope all-nodes address (FF02::1)
The solicited node address for each unicast address on each interface
The multicast address for each joined group on each interface
In addition, IPv6 routers also have the following addresses:
Multicast addresses:
The interface-local scope all-routers address (FF01::2)
The link-local scope all-routers address (FF02::2)
The site-local scope all-routers address (FF05::2)
Anycast addresses:
A subnet-router anycast address for each subnet
Optional — Additional anycast addresses
Table 1.10 summarizes the major differences between IPv6 and IPv4 addresses.
Table 1.10 Differences Between IPv4 Addressing and IPv6 Addressing
IPv4 Address | IPv6 Address |
---|---|
Internet address classes |
N/A |
Multicast addresses (224.0.0.0/4) |
IPv6 multicast addresses (FF00::/8) |
Broadcast addresses |
N/A |
Unspecified address is 0.0.0.0 |
Unspecified address is :: |
Loopback address is 127.0.0.1 |
Loopback address is ::1 |
Public IP addresses |
Aggregatable global unicast addresses |
Private IP addresses |
Site-local addresses (FEC0::/48) |
Autoconfigured addresses |
Link-local addresses (FE80::/64) |
Dotted decimal notation |
Colon hexadecimal format |
Subnet mask or prefix length notation |
Prefix length notation only |
A resource records |
AAAA resource records |