tools/test/topos/dual.json

{
  "devices": {
    "of:0000000000000001": { "basic": { "name": "SW-A" }},
    "of:0000000000000002": { "basic": { "name": "SW-B" }}
  },

  "hosts": {
    "00:00:00:00:00:01/-1": {
      "basic": {
        "locations": [
          "of:0000000000000001/1",
          "of:0000000000000002/1"
        ],
        "ips": [
          "10.0.0.1"
        ],
        "name": "Host-X"
      }
    }
  }
}