#!/bin/sh if ip link show eth0 >/dev/null 2>&1; then ip link set eth0 up ip addr add 10.0.2.15/24 dev eth0 ip route add default via 10.0.2.2 [ -s /etc/resolv.conf ] || printf 'nameserver 1.1.1.1\nnameserver 8.8.8.8\n' >/etc/resolv.conf else echo "brintos-net-up: no eth0 (virtio-net absent) - network not configured" fi