Server address iC880A

Here is the excerpt of the poly packet forwarder global_config.json:

    /* node servers for poly packet server (max 4) */
    "servers":
    [ { "server_address": "127.0.0.1",
        "serv_port_up": 1680,
        "serv_port_down": 1681,
        "serv_enabled": true },
      { "server_address": "iot.semtech.com",
        "serv_port_up": 1680,
        "serv_port_down": 1680,
        "serv_enabled": true } ],