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

Current configuration : 167 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:0:17::1/64
 ipv6 rip R1Rip enable
 keepalive 10 3
 tunnel source Ethernet0/0
 tunnel destination 180.40.7.1


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

Current configuration : 172 bytes
!
interface Tunnel0
 no ip address
 ipv6 address 2005:0:17::7/64
 ipv6 rip R7Rip enable
 keepalive 10 3
 tunnel source FastEthernet0/1
 tunnel destination 180.40.7.66


R7#sh int tu 0
Tunnel0 is up, line protocol is up
  Hardware is Tunnel
  MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation TUNNEL, loopback not set
  Keepalive set (10 sec), retries 3
  Tunnel source 180.40.7.1 (FastEthernet0/1), destination 180.40.7.66
  Tunnel protocol/transport GRE/IP, key disabled, sequencing disabled
  Tunnel TTL 255
  Checksumming of packets disabled,  fast tunneling enabled
  Last input 00:00:04, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/0 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     60 packets input, 6660 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     70 packets output, 5728 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
R7#