Refer to the configuration output below. OSPFv2 is already configured on a customer router and
the customer is requesting that OSPFv3 be added. What configuration is needed in order to add
OSPFv3 to the fastethernet0/0 interface?
Configuration:
ipv6 router ospf 1
router-id 209.165.200.227
area 2 nssa
interface fastethernet0/0
ip address 2001:DB8:0:7::

A.
interface FastEthernet0/0
ipv4 ospf 1 area 2

B.
interface FastEthernet0/0
ipv6 ospf 1 area 2

C.
interface FastEthernet0/0
ipv6 1 area 2

D.
interface FastEthernet0/0
area 2 ospf 1 ipv6