[c-nsp] Frame relay L2TPv3

[M K]

Hi allI have the below topologyR1 - R2 - R3 - R4I have configured L2TPv3 between R2 and R3 in order to achieve connectivity between R1 and R4 which are enabled for both IPv4 and IPv6
R1#sh run int s1/0

Building configuration...



Current configuration : 352 bytes

!

interface Serial1/0

 ip address 192.1.14.1 255.255.255.0

 encapsulation frame-relay

 ipv6 address 2001:192:14::1/64

 ipv6 rip RIPng enable

 serial restart-delay 0

 frame-relay map ipv6 2001:192:14::4 101 broadcast

 frame-relay map ipv6 FE80::C804:13FF:FEA2:0 101 broadcast

 frame-relay map ip 192.1.14.4 101 broadcast

 frame-relay lmi-type ansi

end
R2#sh run int s1/0
Building configuration...



Current configuration : 69 bytes

!

interface Serial1/0

 no ip address

 encapsulation frame-relay

end
R2#sh run | sec connect

connect FR Serial1/0 202 l2transport

 xconnect 3.3.3.3 14 pw-class CLASS
R2#sh run | sec pse

pseudowire-class CLASS

 encapsulation l2tpv3

 interworking ip

 ip local interface Loopback0
R3#sh run int s1/0

Building configuration...



Current configuration : 69 bytes

!

interface Serial1/0

 no ip address

 encapsulation frame-relay

end



R3#sh run | sec connect

connect FR Serial1/0 303 l2transport

 xconnect 2.2.2.2 14 pw-class CLASS

 !

R3#sh run | sec pse

pseudowire-class CLASS

 encapsulation l2tpv3

 interworking ip

 ip local interface Loopback0
R4#sh run int s1/0
Building configuration...



Current configuration : 352 bytes

!

interface Serial1/0

 ip address 192.1.14.4 255.255.255.0

 encapsulation frame-relay

 ipv6 address 2001:192:14::4/64

 ipv6 rip RIPng enable

 serial restart-delay 0

 frame-relay map ipv6 2001:192:14::1 404 broadcast

 frame-relay map ipv6 FE80::C801:13FF:FE92:0 404 broadcast

 frame-relay map ip 192.1.14.1 404 broadcast

 frame-relay lmi-type ansi
end
Now the connectivity for IPv4 is there and working fine , but the issue is in IPv6 , am i missing something?
Thanks
BR,