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

Current configuration : 177 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:17:17::7/64
 ipv6 rip RipR7 enable
 tunnel source FastEthernet0/1
 tunnel destination 180.40.7.66
 tunnel mode ipv6ip
end

R7#
RACK1AS>1
[Resuming connection 1 to r1 ... ]

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

Current configuration : 172 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:17:17::1/64
 ipv6 rip RipR1 enable
 tunnel source Ethernet0/0
 tunnel destination 180.40.7.1
 tunnel mode ipv6ip
end

R1#