interface ethernet 0
 ip nat outside
 standby ip 192.168.1.149
 standby name g1
interface serial 0
 ip nat inside
interface serial 1
 ip nat inside
ip nat pool nat1 192.168.1.150 192.168.1.159 netmask 255.255.255.0
ip nat inside source list 1 pool nat1 mapping-id 1
ip nat Stateful id 2
  redundancy g1
   mapping-id 1
   protocol udp
access-list 1 permit 10.0.0.0 0.255.255.255