Since uncapped 3G is pretty common where I live, I've always thought to build something similar but without never finding the time to do it. This will also be g

Since uncapped 3G is pretty common where I live, I've always thought to build something similar but without never finding the time to do it. This will also be great for load balancing my network the next time I gather to play some online-games with my friends. Any idea will the proxy still be available if one of the connections drops? Like if my broadband cuts out (like it does on a daily basis) will the cellular data automatically take over?