<< Comcast requires that you have a username. Just go to System and change your computer name to whatever thay told you to name it..this "prevents" people from sharing the connection without permission. Even so, my little router emmulate Comp names and MAC addresses even, so my network is fine, that is , when I am at home😉 >>
that USED to be true when comcast was teamed up with @home, but i don't know if that is still true. my cable modem switched over from comcast@home to comcast.net a month ago. We used to go off computer name, but now they work off NIC MAC address (they don't care about computer name anymore)
in order for me to use a different computer w/out a router, you have to reset the cable modem each time, which allows the new NIC to grab DHCP info (since MAC address is somewhat tied up with the cable modem's memory)
so, in other words, FordLorider STILL hasn't mentioned whether or not he ever tried resetting the cable modem each time!!!