R6

show ip ospf neighbor


R7

debug ip ospf adj


R6

conf t
router ospf 6
passive-interface fastethernet1/0
!
show ip ospf neighbor


R2

show ip route 67.67.67.0


R6

conf t
router ospf 6
NO passive-interface fastethernet1/0
!
show ip ospf neighbor


R5

conf t
router ospf 5
passive-interface default
!
show ip ospf neighbor

no passive-interface fastethernet0/0
no passive-interface fastethernet0/1
!
show ip ospf neighbor