class DhcpsApi::SEARCH_INFO_UNION

typedef struct _DHCP_CLIENT_SEARCH_INFO {

DHCP_SEARCH_INFO_TYPE SearchType;
union {
  DHCP_IP_ADDRESS ClientIpAddress;
  DHCP_CLIENT_UID ClientHardwareAddress;
  LPWSTR          ClientName;
} SearchInfo;

} DHCP_SEARCH_INFO, *LPDHCP_SEARCH_INFO;