I have a network with firewalls and support networks, but I would like to test external users with my support area, but do not want NAT everything.
Outside network --FW--(NAT Outside)Support Network(network 220.127.116.11/24 (NAT Inside) ->FW-->Router NAT
Support Servers 18.104.22.168.0/24 22.214.171.124
Support know network (126.96.36.199/24) 188.8.131.52---NATTed to -->184.108.40.206
All outside network would target 220.127.116.11. Support Network(DMZ) would be able to test both 18.104.22.168 and 22.214.171.124 network at the same time.
I have multple routers with this configuration. It works with one out of 4 interfaces.