AR19
<AR19>undo t m
<AR19>sy
[AR19]int g0/0/2
[AR19-GigabitEthernet0/0/2]ip ad 10.1.4.254 24
[AR19-GigabitEthernet0/0/2]int g0/0/1
[AR19-GigabitEthernet0/0/1]nat server global 23.1.1.6 inside 10.1.4.1
AR20
<AR19>undo t m
<AR19>sy
[AR19]int g0/0/2
[AR19-GigabitEthernet0/0/2]ip ad 10.1.6.254 24