A. When a Windows NT/2000 computer starts, a packet is broadcast on the network containing the computer's TCP/IP address to prevent the use of duplicate addresses on the same network. This is called a gratuitous Address Resolution Protocol (ARP) packet.
For both performance and maintenance reasons, it is possible to disable this feature in Windows NT if you have Service Pack 5 installed or any version of Windows 2000.
- Start the registry editor (regedit.exe)
- Move to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
- Double-click the ArpRetryCount value, type 0, and then click OK. If it does not exist create of type REG_DWORD
- Close the registry editor
- Reboot the machine
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