1

I was looking into the network configurations in Android devices. Android makes WI-FI as the default network preference. And I noticed only one network interface can be active at a time in Android. Even ifconfig shows both wi-fi and rmnet_data0 interfaces UP, the routing table has routing rules applied for only one interface.

The rmnet_data0 interface doesn't have RUNNING state when wi-fi is ON. Can you please point me to which file in AOSP file that this restriction implementation has been made (like register only one net_device)? In ConnectivityManager.java file I saw that TYPE_WI-FI was made the default interface, but I could not find how and where they register and unregister network interfaces when WI-FI is present or not.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.