Which type of tunnel configuration is shown ?

[PlAwAnSaI]

Refer to the partial Cisco IOS router configuration exhibit.


Quote:
interface Tunnel0
ipv6 address 2001:db8:3::2/64
tunnel source GigabitEthernet0/0
tunnel destination 209.165.201.1
tunnel mode ipv6ip
!


Which type of tunnel configuration is shown?

A. manual 6in4 tunnel
B. IPv4-in-IPv6 tunnel
C. 6to4 automatic tunnel
D. GRE tunnel
E. 6RD