However, in instance where required this action can be modified so that the Windows System can respond for ARP requests which do not have a unicast ethernet source address from the Windows Registry.
The following procedure to edit the Windows Registry should help you enable or disable responding to ARP requests without a unicast source address. This applies to Windows Server 2008, Windows Vista, Windows XP, Windows Server 2003 (if enabled) and Windows 2000.
1. Click Start - Search and type “reged
it” (In Windows XP/2003, click start – Run and type “regedit”). This launches the WIndows Registry.
2. In the registry, navigate to the following registry key
3. In the right pane, right-click and select New – DWORD (32-bit value) and set its name as “EnableBcastArpReply” and set its value as “0″. Setting “0″ will allow the system to respond to ARP requests without a unicase source address. Should you like to disable this at a later time or revert to the default of responding only to respond to ARP requests with only a unicast addresses, set it “0″ or simply delete the this key.