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When I run check50 on caesar and vigenere, it gets stuck, blank line. No uploading, no remark, I get many DHCP commands and eventually I have to shut down the system. What is wrong?

P.S I have checked for arg!=2

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The many DHCP lines mean that you don't have a valid IP address. Rather than rebooting, you can terminate the program with Ctrl+C

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  • Turns out when you run update50 on your appliance, it messes up something and you lose internet connectivity on the appliance. hence the dhcp error.
    – arriqaaq
    Commented Feb 25, 2015 at 6:06

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