Server Ubuntu 16.04 LTS, not working, apt-get etc, how to fix?

Kind, of day.
Installed ubuntu 16.04 lts server on an old laptop, install, configure connections were OK. As this is my first experience, for convenience, decided to put the mc, but it was not there.
The crux of the problem: sudo apt update, sudo apt-get update don't work then there is work, at the beginning of the report that will be downloaded so many packages, it would take many kilobytes of... Answer Yes, and for a place of loading: failed to retrieve a Temporary error occurred while trying to obtain IP address "". And so that all repositories listed in /etc/apt/sources.the list, copied it - cleaned Russian locale, uncomment the entry deb src, result = 0.
Please help!
April 3rd 20 at 18:53
1 answer
April 3rd 20 at 18:55
You network is not configured or not working.
Thanks, just confused that if you install all downloaded. - Estella_Gottlieb commented on April 3rd 20 at 18:58

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