vdesktop@LaciaMemeFram:~$ sudo apt update
Err:1 http://it.archive.ubuntu.com/ubuntu xenial InRelease
Temporary failure resolving 'it.archive.ubuntu.com'
Err:2 http://security.ubuntu.com/ubuntu xenial-security InRelease
Temporary failure resolving 'security.ubuntu.com'
Err:3 http://ppa.launchpad.net/atareao/telegram/ubuntu xenial InRelease
Temporary failure resolving 'ppa.launchpad.net'
Err:4 http://it.archive.ubuntu.com/ubuntu xenial-updates InRelease
Temporary failure resolving 'it.archive.ubuntu.com'
Err:5 http://ppa.launchpad.net/hermlnx/xrdp/ubuntu xenial InRelease
Temporary failure resolving 'ppa.launchpad.net'
Err:6 http://it.archive.ubuntu.com/ubuntu xenial-backports InRelease
Temporary failure resolving 'it.archive.ubuntu.com'
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://it.archive.ubuntu.com/ubuntu/dists/xenial/InRelease Temporary failure resolving 'it.archive.ubuntu.com'
W: Failed to fetch http://it.archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease Temporary failure resolving 'it.archive.ubuntu.com'
W: Failed to fetch http://it.archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease Temporary failure resolving 'it.archive.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/InRelease Temporary failure resolving 'security.ubuntu.com'
W: Failed to fetch http://ppa.launchpad.net/atareao/telegram/ubuntu/dists/xenial/InRelease Temporary failure resolving 'ppa.launchpad.net'
W: Failed to fetch http://ppa.launchpad.net/hermlnx/xrdp/ubuntu/dists/xenial/InRelease Temporary failure resolving 'ppa.launchpad.net'
W: Some index files failed to download. They have been ignored, or old ones used instead.
vdesktop@LaciaMemeFram:~$