interface GigabitEthernet1
 ip address dhcp
!
interface GigabitEthernet2
 ipv6 address autoconfig
!
interface GigabitEthernet3
 ip helper-address global 10.0.0.1
 ip helper-address 10.0.0.2
 ip address 198.51.100.1 255.255.255.0 secondary
 ip address 198.51.100.2 255.255.255.0
 ipv6 address 2001:DB8:0:3::/64
!
interface GigabitEthernet4
!
interface Loopback1
!
interface Loopback999
 ip address 192.0.2.1 255.255.255.0
!
interface Vlan101
 no autostate
!
interface Vlan901
 no autostate
 ip unnumbered Loopback1
 ipv6 enable
!
interface Vlan902
 ipv6 enable
!
