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I have a macbook and a belkin USB-C to Ethernet Adapter. I would like to use Wi-Fi to access the internet, and the LAN cable to connect to a local network. But it doesn't work. Whenever I plug in the LAN cable, I can't access the internet anymore, and no Wi-Fi networks are found. Why is that?

I set the LAN configuration manually: IP address: 10.0.4.7 netmask: 255.255.255.0 The router field is empty. I tried changing the network priorities, this doesn't seem to have an effect.

  • It should still be under apple warranty if you wanted to take it to an Apple Store I think. I have heard a lot of issues like these on the newer macs. – William Mar 12 '17 at 13:49
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You can change the priority for Wi-Fi over LAN connection. By default machines have LAN connection at top priority. You choose Wi-Fi at top and try again.

Step to change the priority of connection;

  1. Go to System Preference -> Network, in network section at left-below side you have three icons +,-,(icon for setting).
  2. Click on setting icon and you will get multiple option.
  3. Select "Set Service Order..."
  4. Then you will be prompt to a new window with all network option.
  5. Select Wi-Fi and drag it to top.

It should help you to get your internet connection back. Please let me know if it works.

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