{
  "nftables": [
    {
      "metainfo": {
        "version": "VERSION",
        "release_name": "RELEASE_NAME",
        "json_schema_version": 1
      }
    },
    {
      "table": {
        "family": "ip",
        "name": "t",
        "handle": 0
      }
    },
    {
      "chain": {
        "family": "ip",
        "table": "t",
        "name": "c",
        "handle": 0,
        "type": "filter",
        "hook": "input",
        "prio": 0,
        "policy": "accept"
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "s",
        "table": "t",
        "type": [
          "ipv4_addr",
          "iface_index"
        ],
        "handle": 0,
        "flags": [
          "interval"
        ],
        "elem": [
          {
            "concat": [
              "127.0.0.1",
              "lo"
            ]
          },
          {
            "concat": [
              "127.0.0.2",
              "lo"
            ]
          }
        ]
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "s2",
        "table": "t",
        "type": [
          "ipv4_addr",
          "iface_index"
        ],
        "handle": 0,
        "elem": [
          {
            "concat": [
              "127.0.0.1",
              "lo"
            ]
          },
          {
            "concat": [
              "127.0.0.2",
              "lo"
            ]
          }
        ]
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "s3",
        "table": "t",
        "type": "iface_index",
        "handle": 0,
        "elem": [
          "lo"
        ]
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "s4",
        "table": "t",
        "type": "iface_index",
        "handle": 0,
        "flags": [
          "interval"
        ],
        "elem": [
          "lo"
        ]
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "nomatch",
        "table": "t",
        "type": [
          "ipv4_addr",
          "iface_index"
        ],
        "handle": 0,
        "elem": [
          {
            "concat": [
              "127.0.0.3",
              "lo"
            ]
          }
        ]
      }
    },
    {
      "set": {
        "family": "ip",
        "name": "nomatch2",
        "table": "t",
        "type": [
          "ipv4_addr",
          "iface_index"
        ],
        "handle": 0,
        "elem": [
          {
            "concat": [
              "127.0.0.2",
              "90000"
            ]
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  {
                    "meta": {
                      "key": "iif"
                    }
                  }
                ]
              },
              "right": "@s"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  {
                    "meta": {
                      "key": "iif"
                    }
                  }
                ]
              },
              "right": "@s2"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s2"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s2"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "daddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "daddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@s2"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "meta": {
                  "key": "iif"
                }
              },
              "right": "@s3"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "icmp",
                  "field": "type"
                }
              },
              "right": "echo-request"
            }
          },
          {
            "match": {
              "op": "==",
              "left": {
                "meta": {
                  "key": "iif"
                }
              },
              "right": "@s4"
            }
          },
          {
            "counter": {
              "packets": 1,
              "bytes": 84
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "daddr"
                    }
                  },
                  "lo"
                ]
              },
              "right": "@nomatch"
            }
          },
          {
            "counter": {
              "packets": 0,
              "bytes": 0
            }
          },
          {
            "drop": null
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "t",
        "chain": "c",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "concat": [
                  {
                    "payload": {
                      "protocol": "ip",
                      "field": "daddr"
                    }
                  },
                  {
                    "meta": {
                      "key": "iif"
                    }
                  }
                ]
              },
              "right": "@nomatch2"
            }
          },
          {
            "counter": {
              "packets": 0,
              "bytes": 0
            }
          },
          {
            "drop": null
          }
        ]
      }
    }
  ]
}