MIB_IPNETTABLE structure (ipmib.h)

The MIB_IPNETTABLE structure contains a table of Address Resolution Protocol (ARP) entries for IPv4 addresses.


typedef struct _MIB_IPNETTABLE {
  DWORD        dwNumEntries;



The number of ARP entries in the table.


A pointer to a table of ARP entries implemented as an array of MIB_IPNETROW structures.


The GetIpNetTable function retrieves the IPv4-to-physical address mapping table.

on a local system and returns this information in a MIB_IPNETTABLE structure.

The dwNumEntries member in this structure may be zero if there are no ARP entries in the table.

The MIB_IPNETTABLE structure may contain padding for alignment between the dwNumEntries member and the first MIB_IPNETROW array entry in the table member. Padding for alignment may also be present between the MIB_IPNETROW array entries in the table member. Any access to a MIB_IPNETROW array entry should assume padding may exist.

On the Microsoft Windows Software Development Kit (SDK) released for Windows Vista and later, the organization of header files has changed and the MIB_IPNETTABLE structure is defined in the Ipmib.h header file not in the Iprtrmib.h header file. Note that the Ipmib.h header file is automatically included in Iprtrmib.h which is automatically included in the Iphlpapi.h header file. The Ipmib.h and Iprtrmib.h header files should never be used directly.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Header ipmib.h (include Iphlpapi.h)

See also