You're having trouble sending messages to other devices over the LAN.
You're having trouble sending messages to other devices over the LAN.
The issue might be related to your router's configuration after the IP change. It could be that the router is still using PPPoE, which affects how connections are established. Check if PPPoE is enabled and ensure it's properly configured for your new network. Also verify that your devices can reach the router via other methods like DHCP or static IP settings.
Your current device is a modem, not a router. It only provides a single IP address. If you need multiple devices to connect, you'll need a router.
It's the standard setting my ISP provided me—changing those two DNS values in PPPoE mode isn't possible.