I had weird issue recently with my deployment where all intyernal clients all of a sudden would report IP conflict eventhough they were sttaicly assigned. Once I took out the FTD and plugged in their production ASA all was fine again. Eventually after reimaging etc and issue happening again I pin pointed to NAT rule causing it as when I disabled it the internal IP conflicts went away. Can someone explain how a NAT rule might cause IP conflicts on the internal subnet? Also on the Static NAT rules I have no proxy arp , DNS:false, and route lookup defined. Can someone clear these up and explain to me like I am 5 on their use and maybe when I would want to allow proxy arp etc
