Identical names for port forwarding in machine.xml crashes VM at start

[User54321]

While being lazy in configuring the port forwarding through NAT I added to the machines .xml config file the 6 lines (both 3 for SSH and HTTP):

      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/HostPort" value="9022"/>
      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/GuestPort" value="22"/>
      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/Protocol" value="TCP"/>

      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/HostPort" value="9080"/>
      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/GuestPort" value="80"/>
      <ExtraDataItem name="VBoxInternal/Devices/pcnet/0/LUN#0/Config/HTTP/Protocol" value="TCP"/>

Copy'n'Paste'd there where paired entries with identical "names"-Attribute, but different port configuration (both HTTP instead of SSH/HTTP). In this case, the VN crahes at bios boot time.

Although it is the user's fault, the VM should not crash directly but rather be tolerant on such an config error and follow a rule like "first port forwarding used" and display an error message.

[Frank Mehnert]

Fixed as of VBox 3.1.0.