JSI Tip 2167. Windows NT 4.0 generates Event ID 1540 when I attempt to add a Reverse Lookup Zone?

When you try to add any of the following Reverse Loopup Zones in DNS manager:

0.in-addr.arpa.
255.in-addr-arpa.
127.in-addr.arpa.

You receive:

The new zone couldn't be created because there is already a zone by this name. Verify that the zone name was entered correctly or choose a new zone name.

and the System Event log contains:

Event ID: 1540
Source: DNS
Type: Error
Description: DNS Server unable to create domain node.

To resolve the problem, use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\Software\Microsoft\DNSAdministrator\Parameters

Set the REG_DWORD value name ShowAutoCreatedZones to 1.

Navigate to:

HKEY_LOCAL_MACHINE\System\Ccs\Services\Dns\Parameters

Set the REG_DWORD value name DisableAutoReverseZones to 0.