Comcast router - wired clients are on different network from wifi clients
I have a location with a CBR-T modem. This feeds into a Netgear switch for wired devices. The wifi in the modem/router is turned on and shows a DHCP range of 10.1.10.2 to 10.1.10.253, with a gateway of 10.1.10.1 The devices hooked up via wire are on this network.
However, any devices connected via wifi are getting a 172.16.100.x address, with a gateway of 172.16.100.254. Obviously, the wireless devices cannot communicate with the wired. There is nothing I can find in the modem/router config (which is pretty simple) that indicates any kind of network of 172.16.100.x, wifi or otherwise.
Pulling my hair out here and don't know what to think. I'm 900 miles away in a remote office, and nobody at the affected location has any technical skill.
Anyone ever have this issue and found a solution?