clementine

$request({
    version: 'v2',
    path: '/system/dns/servers',
    op: 'read'
}).then(function(response) {
    return response.data.map(function(server, serverIp){
        return $request({
            version: 'v2',
            path: '/system/dns/servers/' + serverIp,
            op: 'delete'
        });
    });
}).each(Promise.all)
.then(function() {
    console.log('done');
});