chromium/chromeos/components/test/data/onc/ethernet.onc

{ "GUID": "guid",
  "Type": "Ethernet",
  "Name": "name",
  "Ethernet": {
    "Authentication": "None"
  },
  "StaticIPConfig":{
    "Gateway":"1.1.1.7",
    "IPAddress":"125.125.125.125",
    "NameServers":[
      "1.1.1.8",
      "125.1.1.3",
    ],
    "RoutingPrefix":26,
    "Type":"IPv4"
  }
}