Double NAT Woes

[wfarid]

I am having trouble connecting my Shield 2017 with KODI installed to my NAS (QNAP TS-209 PRO).

The problem is a classic one - two routers one home setup! My ISP router (Fiber connection that goes straight into a router type device with 4 ethernet ports) can't go into bridge mode without messing up everything. I have a hard wired connection throughout my apartment that links to my ISP router LAN ports. The shield is connected on this network.

My router (Netgear Nighthawk) has DHCP enabled - it handles all of my devices and my NAS is connected to it. Now any of my devices connected to my router can access the NAS, however the Shield cannot. I do not want to turn off DHCP or go into bridge/ap mode as this is an expensive router and can work better than my ISPs.

I can forward ports, trigger ports, setup DMZ on my ISP router. The DHCP range of the ISP router is totally different from Nighthawk. I could not manage to split the DHCP range on my ISP router.

My nighthawk can do the same and much more.

Is there anything I can do (besides moving my NAS to my ISP router)? I can access my ISP router while being connected to the Nighthawk. However while I'm connected to my ISP LAN, I cannot access my Nighthawk.

How can I get the Shield being able to access my NAS?

 

[wfarid]

Well I have an old DLINK router sitting around, I could use that instead of a switch! Maybe this is too complicated -- I'll report back if it works.

But basically on my DLINK I'd place it in the same DHCP range as my Nighthawk but only handle from 100 - 254 . Then on my nighthawk I would have it handle 2 - 99. This way the Sheild and NAS would be on the same range and be visible to each other.

 

[wfarid]

Adding the DLINK did not solve my issues. Ultimately I had to move the Nighthawk next to the ISP Router and then have everything connected to my Nighthawk...

I was able to install some custom firmware on a crappy N router my ISP gave me and use that as an Access Point on the other end of my apartment...