Diagram

Interface to Internet

interface Ethernet0/0
description Outside
ip vrf forwarding INTERNET
ip address 192.0.0.1 255.255.255.252

Interface Inside in the GRT (Global Routing Table)

interface Ethernet0/1
description Inside
ip address 192.168.1.254 255.255.255.0

Leaking default route to internet

ip route 0.0.0.0 0.0.0.0 Ethernet0/0 192.0.0.2

NAT configuration

ip nat inside source list NAT interface Ethernet0/0 overload
access-list NAT permit 192.168.1.0 0.0.0.255

PBR configuration

ip prefix-list PREF seq 5 permit 192.168.1.0/24
!
route-map PBR permit 10
  match ip address 101
  set global
!
access-list 101 permit ip any 192.168.1.0 0.0.0.255

interface Ethernet0/0
 ip policy route-map PBR

Verification

Router#sh ip nat translations
Pro Inside global Inside local Outside local Outside global
icmp 192.0.0.1:7 192.168.1.1:7 8.8.8.8:7 8.8.8.8:7

Router#sh ip policy
Interface      Route map
Ethernet0/0    PBR

Router#sh route-map
route-map PBR, permit, sequence 10
  Match clauses:
    ip address (access-lists): 101
  Set clauses:
    global
  Policy routing matches: 25 packets, 2850 bytes