hostname r3
interface r3-eth0
 ip address 10.0.20.1/24
 ipv6 address 2001:db8:1:1::1/64
!
interface r3-eth1
 ip address 10.0.10.2/24
 ipv6 address 2001:db8:2:1::2/64
!
interface lo
 ip address 10.254.0.3/32
 ipv6 address 2001:db8:F::3/128
!
