Base MAC address for eth0/NAT must be set error reported with 2 VMs

VagrantFile

Vagrant::Config.run do |config|
  
  # SERVER        : tqa-as01.vagrant.exoplatform.com
  # Vagrant name  : as01
  config.vm.define :as01 do |as01_config|
    #as01_config.vm.boot_mode  = :gui
    as01_config.vm.box        = "eXo-ubuntu-11.04-server-amd64_VBoxGuestAdditions-4.1.2"
    as01_config.vm.box_url    = "https://storage.exoplatform.org/public/vagrant/ubuntu/11.04/eXo-ubuntu-11.04-server-amd64_VBGAddition-4.1.2.box"
    as01_config.vm.host_name  = "tqa-as01.exoplatform.org"
    as01_config.vm.network    "33.33.33.10"
    as01_config.vm.customize do |vm|
      vm.memory_size  = 512
      vm.name         = "tqa-as01"
      #vm.cpus         = 1
    end
    as01_config.vm.provision :puppet do |puppet|
      puppet.manifests_path = "../../manifests"
      puppet.manifest_file  = "nodes/tqa-as01.exoplatform.org.pp"
      puppet.module_path    = "../../modules"
      puppet.options        = ["--templatedir","/tmp/vagrant-puppet/templates"]
    end
    as01_config.vm.forward_port "http", 80, 10080
    as01_config.vm.share_folder "v-files", "/tmp/vagrant-puppet/files", "../../files"
    as01_config.vm.share_folder "v-templates", "/tmp/vagrant-puppet/templates", "../../templates"
  end
  
  # SERVER : tqa-db01.vagrant.exoplatform.com
  # Vagrant name  : db01
  config.vm.define :db01 do |db01_config|
    #db01_config.vm.boot_mode  = :gui
    db01_config.vm.box        = "eXo-ubuntu-11.04-server-amd64_VBoxGuestAdditions-4.1.2"
    db01_config.vm.box_url    = "https://storage.exoplatform.org/public/vagrant/ubuntu/11.04/eXo-ubuntu-11.04-server-amd64_VBGAddition-4.1.2.box"
    db01_config.vm.host_name  = "tqa-db01.exoplatform.org"
    db01_config.vm.network    "33.33.33.20"
    db01_config.vm.customize do |vm|
      vm.memory_size  = 512
      vm.name         = "tqa-db01"
      #vm.cpus         = 1
    end
    db01_config.vm.provision :puppet do |puppet|
      puppet.manifests_path = "../../manifests"
      puppet.manifest_file  = "nodes/tqa-db01.exoplatform.org.pp"
      puppet.module_path    = "../../modules"
      puppet.options        = ["--templatedir","/tmp/vagrant-puppet/templates"]
    end
    db01_config.vm.forward_port "http", 80, 20080
    db01_config.vm.forward_port "mysql", 3306, 20306
    db01_config.vm.share_folder "v-files", "/tmp/vagrant-puppet/files", "../../files"
    db01_config.vm.share_folder "v-templates", "/tmp/vagrant-puppet/templates", "../../templates"
  end
end