# meta obrname "br0"
[
    {
        "match": {
            "left": {
                "meta": { "key": "obrname" }
            },
	    "op": "==",
            "right": "br0"
        }
    }
]

# meta ibrname "br0"
[
    {
        "match": {
            "left": {
                "meta": { "key": "ibrname" }
            },
	    "op": "==",
            "right": "br0"
        }
    }
]