IP address from the router remains local even after connecting it to the modem in DMZ mode.
IP address from the router remains local even after connecting it to the modem in DMZ mode.
Yes, adding your phone as a DMZ-hosted device usually changes its public IP address.
Request clarification on this topic. It seems there was some confusion in the discussion. A DMZ on a home router is not about gaining an extra public IP address. The explanation from TP-Link describes a DMZ Host as a device with open ports, typically used to forward traffic to another firewall or NAT device.
Most routers set up port forwarding for every port, sending traffic to the destination IP while keeping the host’s LAN address unchanged. By design, there’s no internal WAN IP—DMZs are meant for multiple devices connected externally. For typical needs, this setup isn’t needed. The LAN always stays separate from the Internet, managed by the router. Usually, you’ll need more than one public IP from your ISP to use a proper DMZ. If your router handles translation, you can rely on it; otherwise, switch to a dedicated device or bridge mode for full control.