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 end 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 end R7#