frr/tests/topotests/mgmt_oper/simple-results/result-intf-state.json

{
  "frr-interface:lib": {
    "interface": [
      {
        "name": "r1-eth0",
        "state": {
          "if-index": "rubout",
          "mtu": 1500,
          "mtu6": 1500,
          "speed": 10000,
          "metric": 0,
          "phy-address": "rubout"
        }
      }
    ]
  }
}