Multicast - kein solches Gerät

Ich versuche eine Verbindung zu einer multicast-Gruppe mit dem folgenden Stück code:

 int flag_on = 1;              /* socket option flag */
  struct sockaddr_in mc_addr;   /* socket address structure */
  char recv_str[MAX_LEN+1];     /* buffer to receive string */
  int recv_len;                 /* length of string received */
  char* mc_addr_str;            /* multicast IP address */
  unsigned short mc_port;       /* multicast port */
  struct sockaddr_in from_addr; /* packet source */
  unsigned int from_len;        /* source addr length */


  mc_addr_str = ip;      /* arg 1: multicast ip address */
  mc_port = port;    /* arg 2: multicast port number */

  /* validate the port range */
  if ((mc_port < MIN_PORT) || (mc_port > MAX_PORT)) {
    fprintf(stderr, "Invalid port number argument %d.\n",
            mc_port);
    fprintf(stderr, "Valid range is between %d and %d.\n",
            MIN_PORT, MAX_PORT);
    exit(1);
  }

  /* create socket to join multicast group on */
 //if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
  if ((sock = socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP)) < 0) {
    perror("socket() failed");
  LOGE("*********Inside Join Multicast -- socket() failed*********");
    exit(1);
  }
  LOGE("Socket value  = %d ",sock);
  /* set reuse port to on to allow multiple binds per host */
  if ((setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &flag_on,
       sizeof(flag_on))) < 0) {
    perror("setsockopt() failed");
  LOGE("*********Inside Join Multicast -- socketopt() failed*********");

    exit(1);
  }

  /* construct a multicast address structure */
  memset(&mc_addr, 0, sizeof(mc_addr));
  mc_addr.sin_family      = AF_INET;
  mc_addr.sin_addr.s_addr = htonl(INADDR_ANY);
  mc_addr.sin_port        = htons(mc_port);

  /* bind to multicast address to socket */
  if ((bind(sock, (struct sockaddr *) &mc_addr,
       sizeof(mc_addr))) < 0) {
    perror("bind() failed");
  LOGE("*********Inside Join Multicast -- bind() failed*********");
    exit(1);
  }

  /* construct an IGMP join request structure */
  mc_req.imr_multiaddr.s_addr = inet_addr(mc_addr_str);
  mc_req.imr_interface.s_addr = htonl(INADDR_ANY);

  /* send an ADD MEMBERSHIP message via setsockopt */
  if ((setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
       (void*) &mc_req, sizeof(mc_req))) < 0) {
    perror("setsockopt() failed");
  LOGE("*********Inside Join Multicast -- socketopt2() failed*********");
  LOGE("Value of errno is %s",strerror(errno));
 exit(1);
  }

und die Fehler, die ich bekommen habe, ist der Wert von errno ist Kein solches Gerät.

Ich versuche dies zu erreichen, die auf omap-board - GB portiert.

Könnten Sie bitte helfen.