"ftp.acc.umu.se/mirror/ubuntu",
"mirror.switch.ch/ftp/mirror/ubuntu",
"www.mirrorservice.org/sites/archive.ubuntu.com/ubuntu",
"ftp.acc.umu.se/mirror/ubuntu",
"mirror.switch.ch/ftp/mirror/ubuntu",
"www.mirrorservice.org/sites/archive.ubuntu.com/ubuntu",