CautionHKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0 | 1 | 1 |
Determines whether the IP autoconfiguration feature is enabled for this interface.
Autoconfiguration allows TCP/IP to configure an interface even when it cannot locate a DHCP server. If an attempt to locate a DCHP server fails, TCP/IP configures the interface by using IP addresses from the Microsoft reserved Class B network (169.254.0.0), subnet mask 255.255.0.0. During autoconfiguration, TCP/IP continues its attempts to locate a DHCP server and abandons the autoconfiguration process if one is located.
IPAutoconfigurationEnabled also appears in the Interfaces\<interface-name> subkeys. The value of the entry in the Tcpip\Parameters subkey applies, by default, to all interfaces. However, if this entry appears in any Interfaces\<interface-name> subkey, its value overrides the value in the Tcpip\Parameters subkey when configuring that interface.
Caution
Do not change the value of this entry. If you do, the IP address assigned to the interface might not be reliable.