***This post started out as VPN VENTURE it is NOT. It turned into a post about setting IP addresses when two routers are involved. With the help of several learned members especially CATCAMSTAR I can now work on the VPN. Nothing to learn about a VPN in this post. In the process of setting up my VPN on my Asus router and ran into this problem: Noted: If the wireless is using a private WAN IP address (192.168.x.x, 10.x.x.x, or 172.16.x.x), this router may under a multi-layer NAT network. The DDNS service is not able to work under this environment. If you have any doubt with your IP, Please refer your ISP for detail information. Apparently I fall under that rule. Can anyone tell me how to circumvent this issue? I have a dsl/router, service providers equipment, and a Asus ac1900 dual band gigabit router. The setup seems not that difficult but I don’t know what to do about this issue.