The problem is when you are connected through the router, the androidwifi in your emulator uses the settings and the sets the DNS to something other than 8.8.8.8 which is the google DNS(I presume this is kinda mandatory setting for the androidwifi to gain internet access). I hope it works for : I figured the problem with this and fixed it.

This fixed it for me after I unsuccessfully tried all the other solutions found on this page and many others. Close the emulator and restart it using the Cold Boot Now option.Then enter the IP address and Gateway that you wrote down in step 2. Click the IP settings dropdown and change it to Static. Click the pencil icon on the top to edit the Network details.We need those IP addresses to fill in as static. Write down (or remember) the IP address and Gateway address displayed there in the network settings. If it is NOT 8.8.8.8, follow this to fix. Navigate to the WiFi connection settings within the emulator: Home Screen -> Swipe up -> Settings -> Network & Internet -> WiFi AndroidWifi -> click gear icon -> click Advanced dropdown near bottom of screen -> Swipe up to view to view Network Details.If it wasn't already checked, restart the emulator before proceeding Step 2 However, on the latest versions, it works better to keep this checked. I emphasis this because many of the previous solutions said to uncheck this. Click on Proxy at the top and make sure Use Android Studio Http proxy settings IS CHECKED. Open the Extended controls dialog that opens up to the right of the emulator.The following steps are for an emulator running Android 11. You have to change the DNS settings within the Emulator. It no longer works to just change the DNS Servers on your local PC. The problem is the DNS settings on the Emulator. It seems the previous answers to this problem no longer work in 2021 (Using Android Studio 4.1.2).

Terminal emulator change mac address