Answer as below configuration: 1.- on R3 config terminal ip route 192.168.1.1 255.255.255.255 209.165.200.229 end copy running start 2.- on R2 config terminal ip route 0.0.0.0 0.0.0.0 209.165.202.130 end copy running start 3.- on R2 config terminal ipv6 route ::/0 2001:db8:abcd::2 end copy running start