What type of IPv6 address is this address FF05::2:260:8FF:FE52:F9D8?
A.
multicast temporary node local
B.
multicast temporary site local
C.
unicast permanent link local
D.
multicast permanent node link local
E.
multicast permanent site local
F.
unicast temporary link local
Explanation:
Permanent IPv6 Multicast addresses are assigned by IANA while the temporary IPv6 Multicast
addresses can be used in pre-deployment Multicast testing. The Flag field may contain one of two
possible values, as illustrated and described in the Table below:
Type of Multicast Address Binary Representation Hexadecimal Value
Permanent 0000 0
Temporary 0001 1
Multicast scope
The scope field indicates the scope of the IPv6 internetwork for which the multicast traffic is
intended. The size of this field is 4 bits. In addition to information provided by multicast routing
protocols, routers use multicast scope to determine whether multicast traffic can be forwarded. For
multicast addresses there are 14 possible scopes (some are still unassigned), ranging from
interface-local to global (including both link-local and sitelocal).
The following table lists the defined values for the scope field:
Table 3. Multicast scope field values
Value Scope
0 Reserved
1 Interface-local scope (same node)
2 Link-local scope (same link)
3 Subnet-local scope
4 Admin-local scope
5 Site-local scope (same site)
8 Organization-local scope
E Global scope
F Reserved
All other scope field values are currently undefined.
For example, traffic with the multicast address of FF02::2 has a link-local scope. An IPv6 router
never forwards this type of traffic beyond the local link.