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DhcpV4RemoveOptionValue function (dhcpsapi.h)

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The DhcpV4RemoveOptionValue function removes an option value from a scope defined on the DHCP server. This function extends the functionality provided by DhcpRemoveOptionValueV5 by allowing the caller to specify a policy for the option.

Syntax

DWORD DHCP_API_FUNCTION DhcpV4RemoveOptionValue(
  [in, optional] LPWSTR                   ServerIpAddress,
  [in]           DWORD                    Flags,
  [in]           DHCP_OPTION_ID           OptionID,
  [in, optional] LPWSTR                   PolicyName,
  [in, optional] LPWSTR                   VendorName,
  [in]           LPDHCP_OPTION_SCOPE_INFO ScopeInfo
);

Parameters

[in, optional] ServerIpAddress

Pointer to a null-terminated Unicode string that represents the IP address or hostname of the DHCP server.

[in] Flags

Indicates whether the option value is for a specific or default vendor.

Flags Meaning
0x00000000
 The option value is removed for a default vendor.
DHCP_FLAGS_OPTION_IS_VENDOR
0x00000003
 The option value is removed for a specific vendor. The vendor is in VendorName.

[in] OptionID

DHCP_OPTION_ID structure that specifies the option code for the option value to remove. A complete list of standard DHCP and BOOTP option codes can be found at http://www.ietf.org/rfc/rfc2132.txt

[in, optional] PolicyName

A null-terminated Unicode string that represents the name of the policy inside the subnet of the option value to remove. The subnet is identified by the SubnetScopeInfo member of ScopeInfo.

[in, optional] VendorName

A null-terminated Unicode string that represents the vendor of the option. This parameter is optional, and should be NULL when Flags is not DHCP_FLAGS_OPTION_IS_VENDOR. If the vendor is not specified, the option value is set for the default vendor.

[in] ScopeInfo

Pointer to a DHCP_OPTION_SCOPE_INFO structure that contains information on the scope of the option value to remove

Return value

If the function succeeds, it returns ERROR_SUCCESS.

If the function fails, it returns one of the following or an error code from DHCP Server Management API Error Codes.

Value Meaning
ERROR_INVALID_PARAMETER
 One or more of the parameters were invalid.
ERROR_DHCP_CLASS_NOT_FOUND
 The class name being used is unknown or incorrect.
ERROR_DHCP_POLICY_NOT_FOUND
 The specified policy name does not exist.
ERROR_DHCP_OPTION_NOT_PRESENT
 The specified option definition does not exist on the DHCP server database or there is no value set for the specified option ID on the specified policy.
ERROR_DHCP_SUBNET_NOT_PRESENT
 The specified IPv4 subnet does not exist.

Requirements

Requirement Value
Minimum supported client None supported
Minimum supported server Windows Server 2012 [desktop apps only]
Target Platform Windows
Header dhcpsapi.h
Library Dhcpsapi.lib
DLL Dhcpsapi.dll

See also

DhcpV4GetAllOptionValues

DhcpV4GetOptionValue

DhcpV4SetOptionValue

DhcpV4SetOptionValues