[
    [
        [
            {
                "admin_state": "up,",
                "interface": "mgmt0",
                "state": "up",
                "var": "extra_var"
            },
            {
                "admin_state": "up,",
                "interface": "Ethernet1/1",
                "state": "up",
                "var": "extra_var"
            }
        ]
    ]
]