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Given the IPv6 address of 2001:0DB8::1:800:200E:88AA, what will be its corresponding the solicited-node multicast address?
A. FF01::1:200E:88AA
B. FF01::1:FF0E:88AA
C. FF01:0DB8::1:800:200E:88AA
D. FF02::1:FF0E:88AA
E. FF02::1:200E:88AA
F. FF02:0DB8::1:800:200E:88AA
Correct Answer: D
Explanation/Reference:
Explanation:
IPv6 nodes (hosts and routers) are required to join (receive packets destined for) the following multicast groups:
. All-nodes multicast group FF02:0:0:0:0:0:0:1 (scope is link-local) . Solicited-node multicast group FF02:0:0:0:0:1:FF00:0000/104 for each of its assigned unicast and anycast addresses
IPv6 routers must also join the all-routers multicast group FF02:0:0:0:0:0:0:2 (scope is link-local). The solicited-node multicast address is a multicast group that corresponds to an IPv6 unicast or anycast address. IPv6 nodes must join the associated solicited-node multicast group for every unicast and anycast address to which it is assigned. The IPv6 solicited-node multicast address has the prefix FF02:0:0:0:0:1:
FF00:0000/104 concatenated with the 24 low-order bits of a corresponding IPv6 unicast or anycast address (see Figure 2). For example, the solicitednode multicast address corresponding to the IPv6 address 2037::01:800:200E:8C6C is FF02::1:FF0E:8C6C. Solicited-node addresses are used in neighbor solicitation messages
