R1#sh run int tun 0
Building configuration...

Current configuration : 152 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:17:17::1/64
 ipv6 rip R1Rip enable
 tunnel source Ethernet0/0
 tunnel destination 180.40.7.1
end

R1#
RACK13AS>7
[Resuming connection 7 to r7 ... ]

R7#sh run int tu 0
Building configuration...

Current configuration : 157 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:17:17::7/64
 ipv6 rip R7Rip enable
 tunnel source FastEthernet0/1
 tunnel destination 180.40.7.66
end

R7#