Ign:1 http://archive.ubuntu.com/ubuntu zesty InRelease
Ign:2 http://archive.ubuntu.com/ubuntu zesty-updates InRelease
Ign:3 http://security.ubuntu.com/ubuntu zesty-security InRelease
Err:4 http://archive.ubuntu.com/ubuntu zesty Release
404  Not Found [IP: 91.189.88.161 80]
Err:5 http://archive.ubuntu.com/ubuntu zesty-updates Release
404  Not Found [IP: 91.189.88.161 80]
Err:6 http://security.ubuntu.com/ubuntu zesty-security Release
404  Not Found [IP: 91.189.91.23 80]
Reading package lists... Done
E: The repository 'http://archive.ubuntu.com/ubuntu zesty Release'
does not have a Release file.
N: Updating from such a repository can't be done securely, and is
therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user
configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-updates
Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is
therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user
configuration details.
E: The repository 'http://security.ubuntu.com/ubuntu zesty-security
Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is
therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user
configuration details.