How to find the on board network adapter's mac address

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I just need to know that how can you find the mac address of motherboard out of available mac addresses when you connect with your Internet dongle .
Actually in my software I need to check for the motherboard mac address for some security check but when your internet dongle is connected ,you can see through ipconfig under command prompt that it shows many mac addresses .
How i want to check against the motherboard mac address only.

How can I find that .

Posted 20-Feb-13 22:43pm

iampradeepsharma

Updated 24-Feb-13 22:21pm

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H.Brydon · Accepted Answer · 2013-02-21T06:21:00

The MAC address is not actually connected to the motherboard. It is unique to the network adapter (one per adapter if there are more than one). There are several ways to do get this info. Here is one:

C++

#include <stdio.h>
#include <WinSock.h>
#pragma comment(lib, "wsock32.lib")

int main(int argc, char *argv[])
{
 WORD wVersionRequested;
 WSADATA wsaData;
 char name[255];
 PHOSTENT hostinfo;
 wVersionRequested = MAKEWORD( 1, 1 );
 char *ip;

 if ( WSAStartup( wVersionRequested, &wsaData ) == 0 )
  if( gethostname ( name, sizeof(name)) == 0)
  {
   printf("Host name: %s\n", name);

   if((hostinfo = gethostbyname(name)) != NULL)
   {
    int nCount = 0;
    while(hostinfo->h_addr_list[nCount])
    {
     ip = inet_ntoa(*(
          struct in_addr *)hostinfo->h_addr_list[nCount]);

     printf("IP #%d: %s\n", ++nCount, ip);
    }
   }
  }
 return 0;
}

Also, here[^]is an article on how to get it 3 different ways. You need to come up with your own way to determine the one you want in the case that you get multiple answers.