IPv$6$ was introduced as the answer for the limited number of unassigned IP addresses remaining under the current IP version $4$ addressing scheme. But, your class notes for this week also introduced private IP addressing and the use of Network Addressing Translation $($NAT$)$ to enable just about anyone to implement an internal class A network using private IP address space and NAT. Since NAT reduces the number of addresses needed, why do we need IPv$6?$ For full credit you will need to discuss other advantages of IPv$6$ in addition to the number of addresses available,