sudo su
echo "security.ubuntu.com 91.189.91.23">>/etc/hosts
echo "us.archive.ubuntu.com 91.189.91.23">>/etc/hosts
echo "de.archive.ubuntu.com 141.76.1.200">>/etc/hosts
echo "google.com 172.217.22.206">>/etc/hosts
echo "google.de 172.217.22.195">>/etc/hosts

apt-get update
apt-get dist-upgrade