# meter acct_out size 4096 { meta iif . ip6 saddr timeout 600s counter }
[
    {
        "meter": {
            "key": {
                "elem": {
                    "timeout": 600,
                    "val": {
                        "concat": [
                            {
                                "meta": { "key": "iif" }
                            },
                            {
                                "payload": {
                                    "field": "saddr",
                                    "protocol": "ip6"
                                }
                            }
                        ]
                    }
                }
            },
            "name": "acct_out",
            "size": 4096,
            "stmt": {
                "counter": null
            }
        }
    }
]

# meter acct_out size 12345 { ip6 saddr . meta iif timeout 600s counter }
[
    {
        "meter": {
            "key": {
                "elem": {
                    "timeout": 600,
                    "val": {
                        "concat": [
                            {
                                "payload": {
                                    "field": "saddr",
                                    "protocol": "ip6"
                                }
                            },
                            {
                                "meta": { "key": "iif" }
                            }
                        ]
                    }
                }
            },
            "name": "acct_out",
            "size": 12345,
            "stmt": {
                "counter": null
            }
        }
    }
]