en
conf t
int f0/0
ip nat inside
ip add 10.138.20.254 255.255.255.0
no shut
exit
int f0/1
ip nat outside
ip add 211.1.1.1 255.255.255.252
no shut
exit
ip nat inside source list 1 int f0/1 overload
access-list 1 permit any
ip route 0.0.0.0 0.0.0.0 f0/1
end
!