I agree with l0c0b0x.  Also both the modem and the wireless router are probably running DHCP servers.  You will want to turn one of them off, usually the easiest one to turn off is the one on the modem as not all wireless routers let you turn DHCP off.

How do I connect these networks?
Basically I created 2 quads side by side and I added a road texture. I used transform.translate so that the road moves, but I am trying to make the road endless by making the 2 quads reposition themselves in front of the current quads repeatedly so that when I add a player the road is endless. Any way I could do this? 
