An engineer configures a router with ipv6 unicast-routing and assigns an IP address to G0/0. However, PCs connected to G0/0 are not automatically generating their own IPv6 addresses. What is missing?
A. The ipv6 enable command on the interface.
B. The router is suppressing Router Advertisements (RA).
C. The interface is administratively down.
D. IPv6 requires a DHCPv6 server; it cannot auto-generate addresses.