If you want to configure all interfaces to be passive, you must do so before you create the interfaces.
SEFOS(config)# ipv6 router ospf
SEFOS(config-router)# passive-interface SEFOS(config-router)# end
SEFOS# show ipv6 ospf interface vlan 10 Ospfv3 Interface Information Interface Name: vlan10 Interface Id: 41 Area Id: 0.0.0.6 Local Address: fe80::214:4fff:fe6c:628f Router Id: 10.0.0.1 Network Type: BROADCAST Cost: 1 State: DR Designated Router Id: 10.0.0.1 local address: fe80::214:4fff:fe6c:628f Backup Designated Router Id: 0.0.0.0 local address: (null) Transmit Delay: 1 sec Priority: 1 IfOptions: 0x0 Timer intervals configured: Hello: 10, Dead: 40, Retransmit: 5, Poll: 120 Demand Circuit: Disable Neighbor Probing: Disable Nbr Probe Retrans Limit: 10 Nbr Probe Interval: 120 No Hellos (Passive interface) Neighbor Count is: 0