Debian 12 bookworm

/via: https://www.linuxtechi.com/configure-static-ip-address-debian/

• https://infotechys.com/add-multiple-ip-addresses-using-nmcli/

nmcli connection
sudo nmcli connection modify 'Wired connection 1' ipv4.address 192.168.1.240/24
sudo nmcli connection modify 'Wired connection 1' ipv4.gateway 192.168.1.1
sudo nmcli connection modify 'Wired connection 1' ipv4.method manual
sudo nmcli connection modify 'Wired connection 1' ipv4.dns '8.8.8.8 4.4.8.8'
sudo nmcli connection down 'Wired connection 1' # perdida de conexión
sudo nmcli connection up 'Wired connection 1'
ip add show enp0s3

auto enp0s3
iface enp0s3 inet static
        address 192.168.1.240/24
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        dns-nameservers 8.8.8.8

sudo systemctl restart networking.service