R1#sh run | b Tu
interface Tunnel0
 no ip address
 no ip redirects
 ipv6 address 2002:B428:742::/64
 keepalive 10 3
 tunnel source Ethernet0/0
 tunnel mode ipv6ip 6to4
!
router bgp 200
 no synchronization
 bgp router-id 1.1.1.1
 bgp log-neighbor-changes
 neighbor 2002:B428:701:: remote-as 100
 neighbor 2002:B428:701:: ebgp-multihop 2
 no neighbor 2002:B428:701:: activate
 neighbor 2005:0:102::2 remote-as 100
 no neighbor 2005:0:102::2 activate
 neighbor 2005:0:104::4 remote-as 300
 no neighbor 2005:0:104::4 activate
 no auto-summary
 !
 address-family ipv6
 neighbor 2002:B428:701:: activate
 neighbor 2005:0:102::2 activate
 neighbor 2005:0:104::4 activate
 network 2006:1:1::/128
 exit-address-family
!
!
ipv6 route 2002::/16 Tunnel0
ipv6 router rip R1Rip
 redistribute static metric 2
  distribute-list prefix-list Prob3 out Serial0/1
!
!
!
ipv6 prefix-list Prob3 seq 5 deny 2000:4:4::/64
ipv6 prefix-list Prob3 seq 7 deny 2002::/16 le 128
ipv6 prefix-list Prob3 seq 10 permit ::/0 le 128
!


R7#sh run | b Tu
interface Tunnel0
 no ip address
 no ip redirects
 ipv6 address 2002:B428:701::/64
 ipv6 rip R7Rip enable
 keepalive 10 3
 tunnel source FastEthernet0/1
 tunnel mode ipv6ip 6to4
!
router bgp 100
 no synchronization
 bgp router-id 7.7.7.7
 bgp log-neighbor-changes
 neighbor 2000:3:3::3 remote-as 100
 no neighbor 2000:3:3::3 activate
 neighbor 2002:B428:742:: remote-as 200
 neighbor 2002:B428:742:: ebgp-multihop 2
 no neighbor 2002:B428:742:: activate
 no auto-summary
 !
 address-family ipv6
 neighbor 2000:3:3::3 activate
 neighbor 2002:B428:742:: activate
 network 2006:7:7::/128
 exit-address-family
!