! interface r4-eth0 ip ospf hello-interval 2 ip ospf dead-interval 10 ip ospf area 1.2.3.4 ! interface r4-eth1 ip ospf hello-interval 2 ip ospf dead-interval 10 ip ospf area 1.2.3.4 ! router ospf ospf router-id 4.0.0.0 capability opaque !