IPV6 static tunnel IPV6IP not working

[B@B@r]

hellow every one, i am configuration static tunnel for ipv6 encapsulation. my topology is working as below.

i am facing the issue that tunnel is not transporting my ipv6 prefixes. kindly guide me.

R1 config                                                                                                                                       

hostname R1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
!
!
no ip domain lookup
ipv6 unicast-routing
ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
no ip address
ipv6 address 2001::1/64
ipv6 rip babar enable
!
interface Tunnel0
no ip address
ipv6 enable
ipv6 rip babar enable
tunnel source FastEthernet0/0
tunnel mode ipv6ip
tunnel destination 192.168.23.3
!
interface FastEthernet0/0
ip address 192.168.12.1 255.255.255.0
speed auto
duplex auto
ipv6 enable
!
interface FastEthernet0/1
no ip address
shutdown
speed auto
duplex auto
!
router ospf 1
network 192.168.12.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ipv6 router rip babar
!
!

R2 config                                                                                                                                                

no ip domain lookup
ipv6 unicast-routing
ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.12.2 255.255.255.0
speed auto
duplex auto
!
interface FastEthernet0/1
ip address 192.168.23.2 255.255.255.0
speed auto
duplex auto
!
router ospf 1
network 192.168.12.0 0.0.0.255 area 0
network 192.168.23.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
! 

R3  configuration                                                                                                                          

hostname R3
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
!
!
no ip domain lookup
ipv6 unicast-routing
ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
no ip address
ipv6 address 2001::3/64
ipv6 rip babar enable
!
interface Tunnel0
no ip address
ipv6 enable
ipv6 rip babar enable
tunnel source FastEthernet0/0
tunnel mode ipv6ip
tunnel destination 192.168.12.1
!
interface FastEthernet0/0
ip address 192.168.23.3 255.255.255.0
speed auto
duplex auto
ipv6 enable
!
interface FastEthernet0/1
no ip address
shutdown
speed auto
duplex auto
!
router ospf 1
network 192.168.23.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ipv6 router rip babar
!
!
!
!
control-plane

my outputs:-

 my tunnel interface and tunnel dentination pinging.

why my RIPng is not show the routes learn from tunnel??

how to check is tunnel is transporting ipv6ip encapulation.

[Harold Ritter · Accepted solution]

The issue is that you are using the same prefix on both R1 and R3. The prefix is 2001::/64. Try the following for example:

R1:

int lo0

ipv6 address 2001:1::1/64

R3:

int lo0

ipv6 address 2001:3::1/64

Regards,

[B@B@r]

Thankyou very much sir. i am very glad to solved my lab.
could you plz guide me some labs for practice CCIE questions.