issues with the terraform provider

Hi, I´ve got some issues with the a terraform script. I create a datacenter, two lans and two servers. Both servers are connected to a private lan (lan2) and one of the servers is connected to the public lan as well.

resource "profitbricks_datacenter" "main" {
  name = "xx_test"
  location = "de/fra"
  description = "Cusomer Data Center"
}

//Public Lan
resource "profitbricks_lan" "lan1" {
  datacenter_id = "${profitbricks_datacenter.main.id}"
  public = true
}

//Private Lan
resource "profitbricks_lan" "lan2" {
  datacenter_id = "${profitbricks_datacenter.main.id}"
  public = false
}

resource "profitbricks_server" "salt-master" {
  name = "salt-master"
  datacenter_id = "${profitbricks_datacenter.main.id}"
  cores = 1
  ram = 2048
  availability_zone = "AUTO"
  cpu_family = "AMD_OPTERON"
  volume {
    name = "system"
    image_name = "${var.ubuntu}"
    size = 30
    disk_type = "HDD"
    ssh_key_path = ["${var.public_key_path}"]    
    image_password = "XXXXXXXX"
  }
  nic {
    lan = "${profitbricks_lan.lan1.id}"
    dhcp = true
    firewall_active = true
    firewall {
      protocol = "TCP"
      name = "SSH"
      port_range_start = 22
      port_range_end = 22
    }
  }
  provisioner "remote-exec" {
    inline = [
      # install salt-master
      "curl -L https://bootstrap.saltstack.com -o install_salt.sh",
      "sudo sh install_salt.sh -M",
    ]
    connection {
      type = "ssh"
      private_key = "${file("${var.private_key_path}")}"
      user = "root"
      timeout = "4m"
    }
  }
}

resource "profitbricks_server" "salt-minion" {
  name = "salt-minion"
  datacenter_id = "${profitbricks_datacenter.main.id}"
  cores = 1
  ram = 2048
  availability_zone = "AUTO"
  cpu_family = "AMD_OPTERON"
  volume {
    name = "system"
    image_name = "${var.ubuntu}"
    size = 30
    disk_type = "HDD"
    ssh_key_path = ["${var.public_key_path}"]    
    image_password = "XXXXXXXX"
  }
  nic {
    lan = "${profitbricks_lan.lan2.id}"
    dhcp = true
  }
  provisioner "remote-exec" {
    inline = [
      # install salt-master
      "curl -L https://bootstrap.saltstack.com -o install_salt.sh",
      "sudo sh install_salt.sh",
    ]
    connection {
      type = "ssh"
      private_key = "${file("${var.private_key_path}")}"
      user = "root"
      timeout = "4m"
    }
  }
}

resource "profitbricks_nic" "master_nic" {
  datacenter_id   = "${profitbricks_datacenter.main.id}"
  server_id       = "${profitbricks_server.salt-master.id}"
  lan             = "${profitbricks_lan.lan2.id}"
  dhcp            = true
}

Wenn I start the script for the first time, it works fine until the creation of the second server. I get the error:

Error applying plan:

2 error(s) occurred:

* profitbricks_server.salt-minion: Resource 'profitbricks_lan.lan2' does not have attribute 'id' for variable 'profitbricks_lan.lan2.id'
* profitbricks_nic.master_nic: Resource 'profitbricks_lan.lan2' does not have attribute 'id' for variable 'profitbricks_lan.lan2.id'

But the output said:

profitbricks_lan.lan2: Creation complete
profitbricks_lan.lan1: Creation complete (ID: 2)

Starting the script again without deleting the datacenter: The second run creates lan2 (again?) now with an id

profitbricks_lan.lan2: Creation complete (ID: 3)

The secons server is created as well, but the remote_exec provisioner is not able to connect to the server, After a lot of tries

profitbricks_server.salt-minion (remote-exec):   Host: 10.14.106.12
profitbricks_server.salt-minion (remote-exec):   User: root
profitbricks_server.salt-minion (remote-exec):   Password: true
profitbricks_server.salt-minion (remote-exec):   Private key: true
profitbricks_server.salt-minion (remote-exec):   SSH Agent: false

I get:

profitbricks_server.salt-minion: Still creating... (6m10s elapsed)

Error applying plan:

1 error(s) occurred:

* profitbricks_server.salt-minion: 1 error(s) occurred:

* timeout

Could you provide any hint? Cheers, Uli

BTW: How can I get the IP-Address of the first server (salt-master) in the private lan, when I create the secons one? Assmne some ${profitbricks_server.salt-master.xxx}