Coreos ignition with remote config fails because of the network

Question

I'm trying to boot my coreOS ova image in VSphere by using customize ignition data which is allocated in a remote file (in S3 amazon). Unfortunatelly I get always the same error:

A start job is running formation (disks) ignition[380]: Get https//s3..... ignition.json: dial tcp: i/o timeout

My ignition file has the following data:

{
    "networkd": {
      "units": [
       {
         "contents": "Match]\nName=eth0\n\n[Network]\nDNS=8.8.8.8\nAddress=192.168.1.1/24\nGateway=192.168.1.1",
         "name": "eth0.network"
  }
  ]
    },
    "ignition": {
        "version": "2.1.0",
        "config": {
            "replace": {
                "source": "https://s3-us-west-2.amazonaws.com/.../ignition.json"
            }
        }
    }
}

Could anyone help me??

Many thanks! Jorge