急！！winpcap编程中如何用获得指定网卡的MAC

[lingducool]

我现在需要知道我在截包前算中的网卡的mac地址，如何才能做到。我在网上查到的一些方法是通过发送NCBENUM命令获取网卡的数目和每个网卡的内部编号，然后对每个网卡标号发送NCBASTAT命令获取其MAC地址，但是我不知道我所选中的网卡的标号是多少。。我的winpcap截包的编程中，选中的网卡信息都在pcap_if结构中，如何获得其标号？？？？或者说怎么才能获得制定网卡的mac？

[Gloveing]

#include "winsock.h" 
#include <stdio.h>
#include <iphlpapi.h>
#pragma comment(lib,"iphlpapi.lib")
void main()
{
    IP_ADAPTER_INFO Interface[20];
    PIP_ADAPTER_INFO NetInterface = NULL;
    DWORD Result = 0;
    unsigned long Length = sizeof(Interface);
    Result = GetAdaptersInfo(Interface, &Length);
    if (Result != NO_ERROR)
    {
        printf("GetAdaptersInfo failed error.\n");
    }
    else
    {
        NetInterface = Interface;
        while (NetInterface)
        {
            static int number;
            number++;
            printf("第%d个网络接口信息:\n", number);
            printf("名称：%s\n", NetInterface->AdapterName);
            printf("信息：%s\n", NetInterface->Description);
            printf("地址：%ld\n", NetInterface->Address);
            printf("MAC地址:%02X:%02X:%02X:%02X:%02X:%02X\n", NetInterface->Address[0], NetInterface->Address[1], NetInterface->Address[2], NetInterface->Address[3], NetInterface->Address[4], NetInterface->Address[5]);
            printf("IP地址：%s\n", NetInterface->IpAddressList.IpAddress.String);
            printf("IP地址掩码:%s\n", NetInterface->IpAddressList.IpMask.String);
            printf("网关:%s\n", NetInterface->GatewayList.IpAddress.String);
            if (NetInterface->DhcpEnabled)
            {
                printf("DHCP配置：\n");
                printf("服务器:%s\n", NetInterface->DhcpServer.IpAddress.String);
                printf("租用:%ld\n", NetInterface->LeaseObtained);
            }
            else
                printf("无DHCP配置\n");
            if (NetInterface->HaveWins)
            {
                printf("Wins配置:\n");
                printf("主Wins服务器:%s\n", NetInterface->PrimaryWinsServer.IpAddress.String);
                printf("次Wins服务器:%s\n", NetInterface->SecondaryWinsServer.IpAddress.String);
            }
            else
                printf("无服务器配置\n");
            NetInterface = NetInterface->Next;
        }
    }
}

[Gloveing]

pcap_if结构：（没有MAC信息）
pcap_if * next
if not NULL, a pointer to the next element in the list; NULL for the last element of the list

char * name
a pointer to a string giving a name for the device to pass to pcap_open_live()

char * description
if not NULL, a pointer to a string giving a human-readable description of the device

pcap_addr * addresses
a pointer to the first element of a list of addresses for the interface

u_int flags
PCAP_IF_ interface flags. Currently the only possible flag is PCAP_IF_LOOPBACK, that is set if the interface is a loopback interface.