如何获取路由器的“公共”接口IP？

Question

I need the 'public' IP of my WiFi-Router, but this router is connected to an other router like this:

Internet --- 1.2.3.4 |Router| 10.0.0.1 --- 10.0.0.2 |WiFi-Router| 192.168.0.1 --- 192.168.0.2 |Client|

In this example, I am the Client and want to get '10.0.0.2' (via C#, Java or similar. Concepts would be enough.)

Answer 1

@panteon00 Your answer seems to be quite simple, your WiFi router is getting the IP 10.0.0.2 just because you have connected the Ethernet cable from Router to WiFi router directly. I can suggest two things which you can try in your case.

Solution 1: You can just plug off the Ethernet cable from WiFi router and then plug it on your client machine. You will automatically get your desired IP.

Note : If you do so, your other devices won't get Internet connection as you have plugged off the Ethernet cable from WiFi router.

Solution 2: You can connect a switch between your WiFi router and the service provider's router. Then connect both your WiFi router and the client PC on switch. And you will get the desired IP.

Note: You must take permission from the owner of router before implementing solution 2 as you will be consuming multiple IPs from their IP stack. Most of the times, if the Router is owned by your ISP then they won't allow you to use a switch.