Comment by reincarnate0x14

For trivial cases NAT is easy, for complex situations it's a nightmare. I've been fighting a lonely battle against multiple-NAT VPNs as being the solution to the wrong problem for longer than I care to remember, and I'm tired boss. A few years ago we had a client site go offline because a local network guy just didn't like IPv6 and turned it off, not realizing that a huge amount of stuff was happening automatically and that's why he hadn't been needing to work on it.