If you see that the internet not working; however, your device is connected to the wireless network, ensure that you are connected to the correct and relevant wireless network. Also, ensure that you have used the correct Wi-Fi network key to connect to the wireless network. Another strategy to troubleshoot Linksys router is to resolve the internet issues is to restart the router. For this, first, turn the router off and disconnect the routers power adapter from the electric socket. Plug the adapter back to the socket after two minutes and turn on the router to check if the issue is resolved. You can also reset Linksys re6300, to solve the problem.