So you are directly connected, no "login" stuff in any OS? If so, you likely obtain your settings via DHCP from your ISP (roadrunner). Do you have ethernet running the whole network, or do you have your cable modem connected to your computer via USB or something similar?
Post the results (feel free to xxx your actual IP) of:
So we can see what's going on. Also, since you didn't mention it, what ethernet card are you running, if you don't know, post the results of:
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