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"The cable for USB 10/100/1000 LAN has a self-assigned IP address and will not be able to connect to the internet."

I got this message in the Network control panel of my Macbook Air after turning off WiFi and connecting a Wavlink "plug & play" ethernet adapter. Even though it recognized the cable/adapter -- it said "connected" -- there was no internet. Wavlink tech support suggested an involved procedure involving changes in the Mac Library. The internet cable was plugged directly into the modem. Remarkably, when I instead plugged the Wavlink cable into a multiport ethernet breakout box (Netgear FS105) that was plugged into the modem, it fixed the problem! I have no idea why the indirect connection worked when the direct modem connection didn't.

MacBook Air 13″, macOS 11.3

Posted on Sep 27, 2021 11:14 AM

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Posted on Sep 27, 2021 11:15 AM

Because the modem is not acting as a DHCP server.

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"The cable for USB 10/100/1000 LAN has a self-assigned IP address and will not be able to connect to the internet."

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