Current configuration : 2193 bytes ! version 12.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R4 ! logging queue-limit 100 logging buffered 65535 debugging ! ip subnet-zero ! ! no ip domain lookup ! ip dhcp pool DHCPPoolLAN_0 network 199.165.64.40 255.255.255.248 dns-server 207.75.164.59 default-router 199.165.64.41 ! ipv6 unicast-routing mpls ldp logging neighbor-changes ! ! ! ! ! ! ! ! ! no voice hpi capture buffer no voice hpi capture destination ! ! mta receive maximum-recipients 0 ! ! ! ! interface FastEthernet0/0 description upstream- R2 ip address 199.165.64.6 255.255.255.252 shutdown duplex auto speed auto ipv6 address 2001:468:2401::2/64 ipv6 enable ! interface Serial0/0 no ip address shutdown no fair-queue ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface FastEthernet1/0 description downstream- R4- localnet ip address 199.165.64.41 255.255.255.248 shutdown duplex auto speed auto ipv6 address 2001:468:2420::/64 ! router bgp 65501 no synchronization bgp router-id 199.165.64.6 bgp log-neighbor-changes neighbor r2-v6 peer-group neighbor r2-v6 remote-as 65502 neighbor 2001:468:2401::1 peer-group r2-v6 no auto-summary ! address-family ipv4 multicast no auto-summary no synchronization exit-address-family ! address-family ipv6 neighbor r2-v6 activate neighbor r2-v6 soft-reconfiguration inbound neighbor r2-v6 prefix-list to-r2-v6 out neighbor 2001:468:2401::1 peer-group r2-v6 network 2001:468:2420::/45 aggregate-address 2001:468:2420::/45 summary-only exit-address-family ! address-family ipv4 neighbor r2-v6 activate neighbor 2001:468:2401::1 peer-group r2-v6 no auto-summary no synchronization exit-address-family ! ip http server ip classless ! ! ! access-list 1 permit 199.165.64.0 0.0.0.128 ipv6 route 2001:468:2420::/45 Null0 ! ! ipv6 prefix-list to-r2-v6 seq 10 permit 2001:468:2420::/45 ! ! ipv6 access-list v6tty permit ipv6 2001:468:2400::/40 any call rsvp-sync ! ! mgcp profile default ! ! ! dial-peer cor custom ! ! ! ! line con 0 login line aux 0 line vty 0 4 exec-timeout 3660 0 login line vty 5 15 login ! ! end R4#