hostname Spoke2
!
no ip domain lookup
ip multicast-routing 
ip cef
!
interface Loopback0
 ip address 3.3.3.3 255.255.255.255
!
interface Tunnel0
 ip address 172.16.123.3 255.255.255.0
 no ip redirects
 ip pim sparse-mode
 ip nhrp authentication DMVPN
 ip nhrp map 172.16.123.1 192.168.123.1
 ip nhrp map multicast 192.168.123.1
 ip nhrp network-id 1
 ip nhrp nhs 172.16.123.1
 ip nhrp shortcut
 ip ospf network point-to-multipoint
 tunnel source GigabitEthernet0/1
 tunnel mode gre multipoint
!
interface GigabitEthernet0/0
 ip address 192.168.3.3 255.255.255.0
 ip pim sparse-mode
 ip igmp join-group 239.1.1.1
!
interface GigabitEthernet0/1
 ip address 192.168.123.3 255.255.255.0
!
router ospf 1
 network 3.3.3.3 0.0.0.0 area 1
 network 172.16.123.0 0.0.0.255 area 1
 network 192.168.3.0 0.0.0.255 area 1
!
ip pim rp-address 1.1.1.1
!
end