I had to move in to my parents house while closing on a house. There modem was up stairs and I am currently on the bottom floor and it is way to far away to run an ether net cable to my PC. I will be here for like 7 days. I plugged my modem an arris surfboard down stairs so I can hook my pc up. so far everything works great. They are still getting internet from their modem and mine is providing me with internet access. Will this set up cause any disruptions or is it fine?