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version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
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hostname R4
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no ip cef
no ipv6 cef
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license udi pid CISCO1941/K9 sn FTX1524BNXF-
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no ip domain-lookup
ip domain-name cisco.com
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spanning-tree mode pvst
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interface Loopback0
 ip address 4.4.4.4 255.255.255.255
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interface Tunnel0
 ip address 172.16.0.2 255.255.255.0
 mtu 1476
 tunnel source Serial0/0/0
 tunnel destination 172.16.0.1
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interface GigabitEthernet0/0
 ip address 10.0.4.1 255.255.255.128
 duplex auto
 speed auto
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interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
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interface Serial0/0/0
 ip address 200.0.0.13 255.255.255.252
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interface Serial0/0/1
 ip address 200.0.0.6 255.255.255.252
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interface Vlan1
 no ip address
 shutdown
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router ospf 1
 log-adjacency-changes
 network 200.0.0.12 0.0.0.3 area 0
 network 200.0.0.4 0.0.0.3 area 0
 network 172.16.0.0 0.0.0.255 area 0
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ip classless
ip route 10.0.4.128 255.255.255.224 172.16.0.1 
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ip flow-export version 9
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no cdp run
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line con 0
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line aux 0
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line vty 0 4
 login
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end