HP 830 Series Configuration Manual page 105

An unspecified address is 0:0:0:0:0:0:0:0 (or ::). It cannot be assigned to any node. Before
•
acquiring a valid IPv6 address, a node fills this address in the source address field of IPv6 packets.
The unspecified address cannot be used as a destination IPv6 address.
Multicast addresses
IPv6 multicast addresses listed in
Table 6 Reserved IPv6 multicast addresses
Address
FF01::1
FF02::1
FF01::2
FF02::2
FF05::2
Multicast addresses also include solicited-node addresses. A node uses a solicited-node multicast
address to acquire the link-layer address of a neighboring node on the same link and to detect duplicate
addresses. Each IPv6 unicast or anycast address has a corresponding solicited-node address. The format
of a solicited-node multicast address is FF02:0:0:0:0:1:FFXX:XXXX. FF02:0:0:0:0:1:FF is fixed and
consists of 104 bits, and XX:XXXX is the last 24 bits of an IPv6 unicast address or anycast address.
EUI-64 address-based interface identifiers
An interface identifier is 64 bits, and it uniquely identifies an interface on a link.
Interfaces generate EUI-64 (64-bit Extended Unique Identifier) address-based interface identifiers
differently.
• On an IEEE 802 interface (such as an Ethernet interface and a VLAN interface)
The interface identifier is derived from the link-layer address (typically a MAC address) of the
interface. The MAC address is 48-bit long. To obtain an EUI-64 address-based interface identifier,
insert the hexadecimal number FFFE (16 bits of 1111111111111110) into the MAC address
(behind the 24th high-order bit), and set the universal/local (U/L) bit (which is the seventh
high-order bit) to 1. This ensures the obtained interface identifier is globally unique.
Figure 48
address.
Figure 48 Converting a MAC address into an EUI-64 address-based interface identifier
• On a tunnel interface
Table 6
Application
Node-local scope all-nodes multicast address
Link-local scope all-nodes multicast address
Node-local scope all-routers multicast address
Link-local scope all-routers multicast address
Site-local scope all-routers multicast address
shows how an EUI-64 address-based interface identifier is generated from a MAC
are reserved for special purposes.
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