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A node is also required to compute and join the associated solicited-node
multicast addresses for every unicast and anycast address it is assigned.
IPv6 addresses that differ only in the high-order bits, e.g. due to multiple
high-order prefixes associated with different aggregations, will map to
the same solicited-node address, thereby reducing the number of
multicast addresses a node must join. In this example, FF02::1:FF90:0/
104 is the solicited-node multicast address which is formed by taking the
low-order 24 bits of the address and appending those bits to the prefix.
Note that the solicited-node multicast address (link-local scope FF02) is
used to resolve the MAC addresses for neighbor nodes since IPv6 does
not support the broadcast method used by the Address Resolution
Protocol in IPv4.
• Prefix Length – This field includes the prefix length, address type
(Global, Link-local, Multicast), and configuration method if manually
set.
• Address Type – Global, Link-local or Multicast.
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