auto eth0
auto eth0:0

auto eth0:1

iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.248

gateway 192.168.1.254


iface eth0:0 inet static
address 192.168.1.2
netmask 255.255.255.248
gateway 192.168.1.254

iface eth0:1 inet static
address 192.168.1.3
netmask 255.255.255.248
gateway 192.168.1.254

# add rest of alias / binds below


+++++ default static setup from debian ++++++
iface eth0 inet static
        address 192.168.1.100
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 192.168.1.254
        dns-search domain.com


Ubuntu Static

Edit yaml file that will be located in this directory:  /etc/netplan
with an example name such as 01-network-manager-all.yaml

The file should look like this:

/etc/netplan/01-network-manager-all.yaml
network:
    version: 2
    renderer: networkd
    ethernets:
        enp3s0:
            addresses:
                - 10.10.10.2/24
            gateway4: 10.10.10.1
            nameservers:
                search: [mydomain, otherdomain]
                addresses: [10.10.10.1, 1.1.1.1]

Save file and then apply changes

sudo netplan apply


https://netplan.io/examples/