A network administrator is testing IPv6 connectivity on a Linux server and receives the following output:
ping: unknown host 2001:db08::5
Which of the following is the MOST likely reason why the ping command is failing?
A. DNS is misconfigured for IPv6 use.
B. The IPv6 network interface is set to use DHCP.
C. The administrator needs to use the ping6 command.
D. The administrator needs to use the ping -6 command.