RBR860 gateway address wrong on DHCP

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sscanf wrote:

I'm not sure what is upstream of the router.  It's cable, provided by an outsourced ISP, and their attitude is "we don't support you because it isn't equipment we supplied".  I get a static public IP address and a static gateway IP address.

 

Kind of makes it hard to work out what is going on at your end.

Is this gateway something that sits between the RBR860 and the Internet?

If so, the "gateway" word is usually associated with something that handles the router stage of your network as well as the Internet connection. If that has its own IP address, then the fact that your router has decided to use 10.0.1.1 is a sign that you have "double NAT" conflicts.

Two routers on your network can cause headaches. For example, you can end up with local problems with addresses on your network. Among other things, the other router can misdirect traffic to addresses that the Netgear router usually handles, such as routerlogin.net or the usual default IP address for a router, 192.168.1.1.

This explains some of the other drawbacks.

What is Double NAT? | Answer | NETGEAR Support

It is often easier to use just one router and then to set up the second router as a wifi access point (AP) with a wired connection to the main router. Netgear advises this, as does just about every site you will visit.

How do I change my NETGEAR router to AP mode? | Answer | NETGEAR Support

But that has its own drawbacks:

Disabled Features on the Router when set to AP Mode | Answer | NETGEAR Support

If you can access the gateway through #a web browser and the graphical user interface (GUI) then there are other things that you cab try. Like putting the IP address it assigned to the RBR860 in the "DMZ".

The bottom line is that we don't know enough about your network.

Just another user with time on their hands.