Cant really give him a solution if he doesnt provide the whole ip of the camera. Its not going to matter really what the camera is either. If there doing this for security reasons, maybe they should change the default username/password. Thats the only thing they can really do. If they read the manual of the router. It shows them the place where they can change the ip of the router and dhcp pool address. If they want I can explain but It would be much easier for me if I know what IP/default gateway is .