I'm trying to install ROS on my VMware fusion 12, but after updating the bash file as per the installation document, I get an error when I enter roscore in the terminal. The error seems to be that my VMware cannot ping itself. It also affected me using openCv. It offers a solution which asks me to ping an IP address, however when I do this I get another error which I also included in this question. Thanks for your help!

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