On Fri, 27 May 2016 21:37:14 -0700
Roopa Prabhu [off-list ref] wrote:

Sample output:
$bridge -j fdb show
[{
        "mac": "44:38:39:00:69:88",
        "dev": "swp2s0",
        "vlan": 2,
        "master": "br0",
        "state": "permanent"
    },{
        "mac": "00:02:00:00:00:01",
        "dev": "swp2s0",
        "vlan": 2,
        "master": "br0"
    },{
        "mac": "00:02:00:00:00:02",
        "dev": "swp2s1",
        "vlan": 2,
        "master": "br0"
    },{
        "mac": "44:38:39:00:69:89",
        "dev": "swp2s1",
        "master": "br0",
        "state": "permanent"
    },{
        "mac": "44:38:39:00:69:89",
        "dev": "swp2s1",
        "vlan": 2,
        "master": "br0",
        "state": "permanent"
    },{
        "mac": "44:38:39:00:69:88",
        "dev": "br0",
        "master": "br0",
        "state": "permanent"
    }
    ]

In most JSON I have seen, the output would be:

{
  "fdb" : [
     {
         "mac": "44:38:39:00:69:88",
         "dev": "swp2s0",
         "vlan": 2,
         "master": "br0",
         "state": "permanent"
     },
...
   ]
}

I.e never a bare array.