1ipv6 forwarding 2! 3interface lo 4 ip address 10.254.254.3/32 5! 6interface r3-eth0 7 ip address 172.16.1.1/24 8 ipv6 address 2001:db8:1::1/64 9! 10interface r3-eth1 11 ipv6 address 2001:db8:2::1/64 12! 13