R1 config
! interface Tunnel1 no ip address mtu 1476 ipv6 address CCCC::/64 ipv6 ospf 1 area 0.0.0.0 tunnel source GigabitEthernet0/0 tunnel destination 192.168.0.2 tunnel mode ipv6ip ! ! interface GigabitEthernet0/0 ip address 192.168.0.1 255.255.255.0 duplex auto speed auto ipv6 dhcp server localipv6 ! interface GigabitEthernet0/1 no ip address duplex auto speed auto ipv6 address AAAA::/64 ipv6 ospf 1 area 0.0.0.0 ! interface GigabitEthernet0/2 no ip address duplex auto speed auto shutdown ! interface Vlan1 no ip address shutdown ! ipv6 router ospf 1 router-id 1.1.1.2 log-adjacency-changes !
R2 config
! interface Tunnel1 no ip address mtu 1476 ipv6 address CCCC::1/64 ipv6 ospf 1 area 0.0.0.0 tunnel source GigabitEthernet0/0 tunnel destination 192.168.0.1 tunnel mode ipv6ip ! ! interface GigabitEthernet0/0 ip address 192.168.0.2 255.255.255.0 duplex auto speed auto ! interface GigabitEthernet0/1 no ip address duplex auto speed auto ipv6 address BBBB::/64 ipv6 enable ipv6 ospf 1 area 0.0.0.0 ipv6 dhcp server localipv6 ! interface GigabitEthernet0/2 no ip address duplex auto speed auto shutdown ! interface Vlan1 no ip address shutdown ! ipv6 router ospf 1 router-id 1.1.1.3 log-adjacency-changes !