Ok so i stopped playing xbox in June (vacation, then house was reconstructed, took a while lol.) But now I want to start playing again. However, every time i test my connection i pass everything except the stupid mtu test. It says I need at least 1342 of MTU and I am POSITIVE i have that. I tried everything from restarting my modem/router/xbox to trying new ethernet cables etc. Is there another possible way to fix this problem? Please HELP ME!