hostname R6
!
interface Tunnel2002
 no ip address
 no ip redirects
 ipv6 address 2002:303:306::1/128
 tunnel source FastEthernet1/0
 tunnel mode ipv6ip 6to4
!
interface FastEthernet1/0
 ip address 3.3.3.6 255.255.255.252
!
ipv6 route 2002::/16 Tunnel2002
ipv6 route ::/0 2002:202:20A::1
!
!
hostname R8
!
interface Tunnel2002
 no ip address
 no ip redirects
 ipv6 address 2002:202:20A::1/128
 tunnel source FastEthernet1/0
 tunnel mode ipv6ip 6to4
!
interface FastEthernet1/0
 ip address 2.2.2.10 255.255.255.252
!
ipv6 route 2002::/16 Tunnel2002
!