绑定网口

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include /* the L2 protocols */
#include

#define IFNAME "eth0"
 
int main()
{
   
       struct ifreq interface;
     int sock;
   
    if((sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0)
    {
         printf("create socket error\n");
       return -1;
    }
    
     strncpy(interface.ifr_ifrn.ifrn_name, IFNAME, IFNAMSIZ);
     if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, \
     (char *)&interface, sizeof(interface)) < 0)
     {
          printf("SO_BINDTODEVICE failed");
       
     }
    
     return 0;
 }