This is my scenario, until now I have no problem at all, but I want to consider your opinion. Maybe there´s something I can do to make this better.
In my house, I want some devices to connect to my internet normally and some devices to connect through a VPN, so what I did was this.
Internet --> Router (192.168.10.1) --> Home network
Router (192.168.10.1) --> Dlink Router (WAN 192.168.10.2/LAN 192.168.11.1)
Here, the DlinkRouter now has double NAT in the network 192.168.11.1
From here, I connected another router:
Dlink Router (WAN 192.168.10.2/LAN 192.168.11.1) --> PPTP Router(WAN 192.168.11.2/LAN 192.168.10.99 DCHP disable) This router PPTP is connected to my home network switch, obviously without DCHP server, so, when I want a device to use the PPTP VPN gatway, I just state in the gateway to use 192.168.10.99 instead of my Router 192.168.10.1
Actually this works, so all my home network is behind only one NAT, the devices I want to use the VPN will go through a triple NAT, but everything works....
Will this cause a problem in my home network???