Debian

sudo apt install netselect-apt
sudo netselect-apt

sudo -s
mv /etc/apt/sources.list /etc/apt/sources.list.old
echo "deb http://deb.debian.org/debian sid main contrib non-free">/etc/apt/sources.list
echo "deb-src http://deb.debian.org/debian sid main contrib non-free">>/etc/apt/sources.list
cat /etc/apt/sources.list
apt update && apt dist-upgrade -y && apt autoremove -y && apt clean -y && reboot

sudo nano /etc/network/interfaces

Die Zeile iface ens18 inet dhcp mit # auskommentieren und folgendes danach einfügen:

iface ens18 inet static
 address 192.168.178.222
 netmask 255.255.255.0
 gateway 192.168.178.254
 dns-domain fritz.box
 dns-nameservers 192.168.178.254

Strg+O & Strg+X

sudo reboot