Too many people use 192.168.0/24 and 192.168.1/24 and eventually some of those networks need to be connected. You can only have so many of those in an organisat

Too many people use 192.168.0/24 and 192.168.1/24 and eventually some of those networks need to be connected. You can only have so many of those in an organisation before it becomes a pain point. A conslutant friend told a story about a customer who had been through a few mergers and demergers. One nightly database dump there involved parts of one database being copied to another, both internal to the same company, through five layers of NAT. One of the routers had a 1500-line NAT configuration.