IP Networking Unit 8 Assignment 1

Multicast addresses in IPv6 have a larger amount of addresses than IPv4. There are many different multicast addresses for IPv6 and not quite as many for IPv4. Where IPv4 is 32 bits of the total address IPv6 is 128 bits overall. Neighbor discovery in IPv4 is usually rather easy, but in IPv6 it is much easier. Connecting to an address that with IPv4 is currently the way things work easiest, but with IPv6 being able to be converted to connection with IPv4, it is also a rather great way to connect. Connecting to routers is easy on both IPv4 and IPv6 because they both can be converted depending on which way they are going.
The Flags field indicates flags that are set on the multicast address. The size of this field is 4 bits. As of RFC 2373, the only flag defined is the Transient (T) flag. The T flag uses the low-order bit of the Flags field. When set to 0, the T flag indicates that the multicast address is a permanently-assigned (well-known) multicast address allocated by the Internet Assigned Numbers Authority (IANA). When set to 1, the T flag indicates that the multicast address is a transient (not permanently assigned) multicast address.
The solicited-node address facilitates efficient querying of network nodes during address resolution. In IPv4, the ARP Request frame is sent to the MAC-level broadcast, disturbing all nodes on the network segment, including those that are not running IPv4. IPv6 uses the Neighbor Solicitation message to perform address resolution. However, instead of using the local-link scope all-nodes address as the Neighbor Solicitation message destination, which would disturb all IPv6 nodes on the local link, the solicited-node multicast address is used. The solicited-node multicast address consists of the prefix FF02::1:FF00:0/104 and the last 24-bits of the IPv6 address that is being resolved.
For example, for the node with the link-local IPv6 address of FE80::2AA:FF:FE28:9C5A, the corresponding solicited-node address is