Router: NAT with Secondary IP Address

interface Ethernet0/0
description **** To Public Address ****
ip address 20.18.10.2 255.255.255.252
ip nat outside
ip virtual-reassembly
full-duplex
!
interface Ethernet1/0
description ***Connection To LAN ***
ip address 192.168.0.1 255.255.255.0 secondary
ip address 20.18.10.129 255.255.255.128
ip nat inside
ip virtual-reassembly
full-duplex


ip route 0.0.0.0 0.0.0.0 20.18.10.1
!
ip nat inside source list 10 interface Ethernet0/0 overload
!
access-list 10 permit 192.168.0.0 0.0.0.255
access-list 10 deny any