Как определить MAC-адрес

Вариант 1 

Вот исходник моей функции для опpеделения МАС адpеса.

UCHAR MYLIBAPI GetAdapterID(char *Name, // NetBIOS имя станции
UINT lana_num,
CARDID *ID) // 6 байтовый массив
{
UCHAR rc = 0;
UCHAR Status[256];

while( lstrlen(Name) - 15)
lstrcat(Name, " ");

memset(&SNcb, 0, sizeof(NCB));
SNcb.ncb_command = NCBASTAT;
SNcb.ncb_buffer = (LPSTR)Status;
SNcb.ncb_length = 256;
lstrcpy(SNcb.ncb_callname, Name);
SNcb.ncb_lana_num = lana_num;
rc = Netbios( &SNcb );
if(rc ==0){
memcpy(ID, Status, 6);
}
return(SNcb.ncb_cmd_cplt);
}

Это под Win32. Конечно должен быть пpотокол NetBIOS, но он в фоpточках и так
необходим.

Вариант2

#include <windows.h>
#include <winsock.h>
#include <wsipx.h>
#include <wsnwlink.h>
#include <stdio.h>

void main()
{
int iAdapters,iOpt=sizeof(iAdapters),iSize=sizeof(SOCKADDR_IPX);
SOCKET skNum;
SOCKADDR_IPX Addr;
WSADATA Wsa;

if(WSAStartup(0x0101,&Wsa)) return;
if((skNum=socket(AF_IPX,SOCK_DGRAM,NSPROTO_IPX))!=INVALID_SOCKET)
{
memset(&Addr,0,sizeof(Addr));
Addr.sa_family=AF_IPX;
if(bind(skNum,(SOCKADDR *)&Addr,iSize)!=SOCKET_ERROR)
{
if(getsockopt(skNum,NSPROTO_IPX,IPX_MAX_ADAPTER_NUM,
(char *)&iAdapters,&iOpt)!=SOCKET_ERROR)
{
while(iAdapters)
{
IPX_ADDRESS_DATA Data;
memset(&Data,0,sizeof(Data));
Data.adapternum=iAdapters-1;
iOpt=sizeof(Data);
if(getsockopt(skNum,NSPROTO_IPX,IPX_ADDRESS,(char
*)&Data,&iOpt)!=SOCKET_ERROR)
{
printf("Addr: %02X%02X%02X%02X:%02X%02X%02X%02X%02X%02X\n",
(int)Data.netnum[0],(int)Data.netnum[1],(int)Data.netnum[2],
(int)Data.netnum[3],(int)Data.netnum[4],(int)Data.netnum[5],
(int)Data.netnum[6],(int)Data.netnum[7],(int)Data.netnum[8],
(int)Data.netnum[9]);
}
iAdapters--;
}
}
}
closesocket(skNum);
}
WSACleanup();
}

Вариант 3

#include <windows.h>
#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>

typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * PASTAT;

ASTAT Adapter;

void main (void)
{
NCB Ncb;
UCHAR uRetCode;
char NetName[50];

memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBRESET;
Ncb.ncb_lana_num = 0;

uRetCode = Netbios( &Ncb );
printf( "The NCBRESET return code is: 0x%x \n", uRetCode );

memset( &Ncb, 0, sizeof (Ncb) );
Ncb.ncb_command = NCBASTAT;
Ncb.ncb_lana_num = 0;

strcpy( Ncb.ncb_callname, "* " );
Ncb.ncb_buffer = (char *) &Adapter;
Ncb.ncb_length = sizeof(Adapter);

uRetCode = Netbios( &Ncb );
printf( "The NCBASTAT return code is: 0x%x \n", uRetCode );
if ( uRetCode == 0 )
{
printf( "The Ethernet Number is: %02x%02x%02x%02x%02x%02x\n",
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5] );
}
}