Ubuntu 16.04 LTS Server temporary failure resolving

Server
1

Freshly install Ubuntu 16.04 LTS SERVER tty1

When I try to use sudo apt-get update

This shows up

Err:1 http:// ro.archive.ubuntu.com/ubuntu xenial InRelease
temporary failure resolving 'ro.archive.ubuntu .com'

Err:2 http:// ro.archive.ubuntu.com/ubuntu xenial-security InRelease
temporary failure resolving 'ro.archive.ubuntu .com'

Err:3 ... xenial-updates InRelease
temporary failure resolving 'ro.archive.ubuntu .com'

Err:4... xenial-backports InRelease
temporary failure resolving 'us.archive.ubuntu .com'

Failed to fetch http:// us.archive.ubuntu.com/ubuntu xenial InRelease temporary failure resolving 'ro.archive.ubuntu .com'

failed to fetch ....

2

Dup: https://central.owncloud.org/t/install-owncloud-9-1-on-ubuntu-16-4-tls/2743

Please avoid creating multiple threads about your same networking issue...