Our main modem (Optical Network Unit) is in the living room which comes from the ISP. Then I set up WRT54G, making it the 2nd modem, which I set up with an IP of
188.8.131.52. If anyone wants to connect to a wired connection, it will now be connected to the 2nd modem, the WRT54G.
I connected another unused Optical Network Unit; let's call it 3rd WiFi modem to my 2nd modem. It has an IP of
192.168.254.254 which the unit comes from another Internet Service Provider.
Here's the problem: The IP of my desktop which is connected directly to the 2nd modem which has an IP of
184.108.40.206 after connecting the 3rd WiFi modem to my 2nd modem the IP of my desktop change to
192.168.254.something and showing it's connected to 3rd modem when in fact it's directly connected to my 2nd modem.