badvpn/ncd/ncd.conf.example

# Network card using DHCP
process lan {
    # Make the interface name a variable so we can refer to it.
    var("eth0") dev;

    # Wait for the network card appear and for the cable to be plugged in.
    net.backend.physical(dev);

    # Start DHCP.
    net.ipv4.dhcp(dev) dhcp;

    # Once DHCP obtains an IP address, assign it to the interface.
    net.ipv4.addr(dev, dhcp.addr, dhcp.prefix);

    # Add a default route.
    net.ipv4.route("0.0.0.0", "0", dhcp.gateway, "20", dev);

    # Add DNS servers.
    net.dns(dhcp.dns_servers, "20");
}