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This is probably a pretty basic question with a fairly simple answer, but I was just wondering if anyone could clarify why there is a different IP address for my Ethernet connection and my Wireless LAN connection, rather than just one IP address for the actual machine?
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It's because they are different connections. Each interface, hard wired or wired, will have its own IP address. The IP itself is assigned by your router. If you are concerned with what pool your IP is assigned from, you need to go into your setup utility and see what is allocated for wireless, and what is wired.
3 Changing IP With Wi-Fi NetworksThe portability of Wi-Fi makes it easier to temporarily change your IP compared to a wired connection. Whenever you connect to a different Wi-Fi network, your public IP will become that network's IP.
This address is the identifying mark that lets a networked computer communicate with the Internet. The ethernet address is how we can associate an “IP address” to an individual compute — without this– number, there's no way to access any servers, websites, email, etc.
While IP is the only addressing protocol used by Ethernet, Ethernet networks use two types of data transmission: TCP and UDP.
It's because they are different connections. Each interface, hard wired or wired, will have its own IP address. The IP itself is assigned by your router. If you are concerned with what pool your IP is assigned from, you need to go into your setup utility and see what is allocated for wireless, and what is wired. This same thing would happen if you had 2 ethernet cards in your machine. Each one would have it's own IP.
In other words, the IP is a unique identifier as per device, not each machine. You will have as many IPs as you have devices.
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