We are using a Series 1800 router to connect to the Internet and provide Wireless connections. We are also using a Linksys router to connect a server and client to the same Series 1800 router. Whenever we lose power, the Series 1800 will no longer allow the Linksys to connect to the Internet. If we swap out the Linksys with another router, it will work fine. What is causing the Series 1800 to stop allowing a connection like this?