char *
arp_lookup(dev, ip, mac)
        unsigned char *dev;   
        unsigned char *ip;
        unsigned char *mac;
        CODE:
          char tmp[20];
          printf("TMP(%d) IS %s\n", strlen(tmp), tmp);
          if(SOCK_TYPE == SOCK_RAW)
          {
            arp_lookup_bsd(dev,ip,tmp);
          }
          else
          {
            arp_lookup_linux(dev,ip,tmp);
          }

          mac = tmp;

        OUTPUT:  
        mac