![]() ![]() ![]() While we'd love to provide specific instructions for your exact situation, there are simply too many routers, too many firmware versions, and too many possible combinations there of, for us to possibly give you the exact combination of steps for your hardware. There are several ways you can fix a double NAT problem, and thankfully they're all pretty simple to employ. Related: Understanding Routers, Switches, and Network Hardware This forwarding-dead-end means a wide range of applications and services-communication apps like Skype, smart home apps and hardware like your Nest thermostat, and music hardware like your Sonos music system-either outright fail or require a lot of annoying trouble shooting on your behalf to fix. When a device connected to router (that is in turn connected to another router) attempts to set up a port forward arrangement via UPnP, it ends up forwarded not to the greater internet but to the other router. UPnP, the most common victim of the double NAT, is a handy router service that automatically forwards ports on your router so applications that require specific or forwarded ports will work properly. At worst, it completely wrecks UPnP (Universal Plug and Play) and any other router-based service that relies on the premise that the router will always be facing out towards the greater internet (and not facing into another internal network). At best, it introduces latency into your network connections, which can cause lag in latency-sensitive applications like gaming. ![]()
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