Настройка сети в Debian/Ubuntu

auto eth0
iface eth0 inet static
    address 192.168.0.10
    gateway 192.168.0.1
    netmask 255.255.255.0
    dns-nameservers 77.88.8.8 77.88.8.1

iface eth0 inet6 static
    address 2345:2345::10
    gateway 2345::1
    netmask 48
    dns-nameservers 2a02:6b8::feed:0ff 2a02:6b8:0:1::feed:0ff

Ubuntu 18.04

/etc/netplan/01-netcfg.yaml

# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    ens18:
      dhcp4: no
      addresses:
        - 10.0.0.10/32
#      gateway4: 10.0.0.1
      nameservers:
        addresses:
          - 8.8.8.8
          - 77.88.8.8
      routes:
        - to: 0.0.0.0/0
          scope: link

Применить настройки

netplan apply