예제 #1
0
파일: 6pack.c 프로젝트: morisson/code
libnet_ptag_t
build_pkt (libnet_t * l, u_long * seq, struct libnet_in6_addr src,
	   struct libnet_in6_addr victim)
{

  libnet_ptag_t ip_tag, tcp_tag;

  ip_tag = tcp_tag = LIBNET_PTAG_INITIALIZER;
  libnet_seed_prand (l);

  *seq = (u_long) libnet_get_prand (LIBNET_PRu32);

  tcp_tag = libnet_build_tcp (0,
			      0,
			      *seq,
			      libnet_get_prand (LIBNET_PRu32),
			      TH_SYN,
			      libnet_get_prand (LIBNET_PRu16),
			      0, 0, LIBNET_TCP_H, NULL, 0, l, 0);

  ip_tag = libnet_build_ipv6 (0,
			      0,
			      LIBNET_TCP_H,
			      IPPROTO_TCP, 64, src, victim, NULL, 0, l, 0);
  return tcp_tag;
}
예제 #2
0
파일: sender6.c 프로젝트: LucasLage/netlib
struct packet * sender6_send_icmp(struct sender6 *s, /* {{{ */
		struct libnet_in6_addr dst, uint8_t ttl,
		uint8_t traffic_class, uint32_t flow_label,
		uint16_t icmpsum, uint16_t icmpid, uint16_t icmpseq,
		size_t padding)
{
	padding += (padding % 2);
	size_t cnt = padding/sizeof(uint16_t) + 1;
	uint16_t *pload = malloc(cnt * sizeof(uint16_t));
	if(!pload) logea(__FILE__, __LINE__, NULL);
	memset(pload, 0, cnt * sizeof(uint16_t));

	pload[cnt-1] = sender6_compute_icmp_payload(icmpsum, icmpid, icmpseq);

	s->icmptag = libnet_build_icmpv6_echo(ICMP6_ECHO, 0,
		SENDER_AUTO_CHECKSUM, icmpid, icmpseq,
		(uint8_t *)pload, cnt * sizeof(uint16_t),
		s->ln, s->icmptag);

	free(pload);
	if(s->icmptag == -1) goto out;

	size_t sz = LIBNET_ICMPV6_ECHO_H + cnt*sizeof(uint16_t);
	s->iptag = libnet_build_ipv6(traffic_class, flow_label,
			sz, IPPROTO_ICMP6, ttl, s->ip, dst,
			NULL, 0,
			s->ln, s->iptag);

	if(s->iptag == -1) goto out;

	if(libnet_write(s->ln) < 0) goto out;

	struct packet *pkt = sender6_make_packet(s);
	return pkt;

	out:
	loge(LOG_FATAL, __FILE__, __LINE__);
	logd(LOG_DEBUG, "%s %d %d error: %s\n", __func__, ttl, icmpsum,
			libnet_geterror(s->ln));
	libnet_clear_packet(s->ln);
	s->icmptag = 0;
	s->iptag = 0;
	return NULL;
} /* }}} */
예제 #3
0
static gboolean
afinet_dd_construct_ipv6_packet(AFInetDestDriver *self, LogMessage *msg, GString *msg_line)
{
  libnet_ptag_t ip, udp;
  struct sockaddr_in *src4;
  struct sockaddr_in6 src, *dst;
  struct libnet_in6_addr ln_src, ln_dst;

  switch (msg->saddr->sa.sa_family)
    {
    case AF_INET:
      src4 = (struct sockaddr_in *) &msg->saddr->sa;
      memset(&src, 0, sizeof(src));
      src.sin6_family = AF_INET6;
      src.sin6_port = src4->sin_port;
      ((guint32 *) &src.sin6_addr)[0] = 0;
      ((guint32 *) &src.sin6_addr)[1] = 0;
      ((guint32 *) &src.sin6_addr)[2] = htonl(0xffff);
      ((guint32 *) &src.sin6_addr)[3] = src4->sin_addr.s_addr;
      break;
    case AF_INET6:
      src = *((struct sockaddr_in6 *) &msg->saddr->sa);
      break;
    default:
      g_assert_not_reached();
      break;
    }

  dst = (struct sockaddr_in6 *) &self->super.dest_addr->sa;

  libnet_clear_packet(self->lnet_ctx);

  udp = libnet_build_udp(ntohs(src.sin6_port),
                         ntohs(dst->sin6_port),
                         LIBNET_UDP_H + msg_line->len,
                         0,
                         (guchar *) msg_line->str,
                         msg_line->len,
                         self->lnet_ctx,
                         0);
  if (udp == -1)
    return FALSE;

  /* There seems to be a bug in libnet 1.1.2 that is triggered when
   * checksumming UDP6 packets. This is a workaround below. */

  libnet_toggle_checksum(self->lnet_ctx, udp, LIBNET_OFF);

  memcpy(&ln_src, &src.sin6_addr, sizeof(ln_src));
  memcpy(&ln_dst, &dst->sin6_addr, sizeof(ln_dst));
  ip = libnet_build_ipv6(0, 0,
                         LIBNET_UDP_H + msg_line->len,
                         IPPROTO_UDP,            /* IPv6 next header */
                         64,                     /* hop limit */
                         ln_src, ln_dst,
                         NULL, 0,                /* payload and its length */
                         self->lnet_ctx,
                         0);

  if (ip == -1)
    return FALSE;

  return TRUE;
}
예제 #4
0
파일: soccr.c 프로젝트: Snorch/criu
static int send_fin(struct libsoccr_sk *sk, struct libsoccr_sk_data *data,
		unsigned data_size, uint8_t flags)
{
	int ret, exit_code = -1;
	char errbuf[LIBNET_ERRBUF_SIZE];
	int mark = SOCCR_MARK;;
	int libnet_type;
	libnet_t *l;

	if (sk->dst_addr->sa.sa_family == AF_INET6)
		libnet_type = LIBNET_RAW6;
	else
		libnet_type = LIBNET_RAW4;

	l = libnet_init(
		libnet_type,		/* injection type */
		NULL,			/* network interface */
		errbuf);		/* errbuf */
	if (l == NULL) {
		loge("libnet_init failed (%s)\n", errbuf);
		return -1;
	}

	if (setsockopt(l->fd, SOL_SOCKET, SO_MARK, &mark, sizeof(mark))) {
		logerr("Can't set SO_MARK (%d) for socket\n", mark);
		goto err;
	}

	ret = libnet_build_tcp(
		ntohs(sk->dst_addr->v4.sin_port),		/* source port */
		ntohs(sk->src_addr->v4.sin_port),		/* destination port */
		data->inq_seq,			/* sequence number */
		data->outq_seq - data->outq_len,	/* acknowledgement num */
		flags,				/* control flags */
		data->rcv_wnd,			/* window size */
		0,				/* checksum */
		10,				/* urgent pointer */
		LIBNET_TCP_H + 20,		/* TCP packet size */
		NULL,				/* payload */
		0,				/* payload size */
		l,				/* libnet handle */
		0);				/* libnet id */
	if (ret == -1) {
		loge("Can't build TCP header: %s\n", libnet_geterror(l));
		goto err;
	}

	if (sk->dst_addr->sa.sa_family == AF_INET6) {
		struct libnet_in6_addr src, dst;

		memcpy(&dst, &sk->dst_addr->v6.sin6_addr, sizeof(dst));
		memcpy(&src, &sk->src_addr->v6.sin6_addr, sizeof(src));

		ret = libnet_build_ipv6(
			0, 0,
			LIBNET_TCP_H,	/* length */
			IPPROTO_TCP,	/* protocol */
			64,		/* hop limit */
			dst,		/* source IP */
			src,		/* destination IP */
			NULL,		/* payload */
			0,		/* payload size */
			l,		/* libnet handle */
			0);		/* libnet id */
	} else if (sk->dst_addr->sa.sa_family == AF_INET)
		ret = libnet_build_ipv4(
			LIBNET_IPV4_H + LIBNET_TCP_H + 20,	/* length */
			0,			/* TOS */
			242,			/* IP ID */
			0,			/* IP Frag */
			64,			/* TTL */
			IPPROTO_TCP,		/* protocol */
			0,			/* checksum */
			sk->dst_addr->v4.sin_addr.s_addr,	/* source IP */
			sk->src_addr->v4.sin_addr.s_addr,	/* destination IP */
			NULL,			/* payload */
			0,			/* payload size */
			l,			/* libnet handle */
			0);			/* libnet id */
	else {
		loge("Unknown socket family\n");
		goto err;
	}
	if (ret == -1) {
		loge("Can't build IP header: %s\n", libnet_geterror(l));
		goto err;
	}

	ret = libnet_write(l);
	if (ret == -1) {
		loge("Unable to send a fin packet: %s\n", libnet_geterror(l));
		goto err;
	}

	exit_code = 0;
err:
	libnet_destroy(l);
	return exit_code;
}
예제 #5
0
int
main(int argc, char **argv)
{
    struct libnet_in6_addr dst_ip;
    struct libnet_in6_addr src_ip;
    u_short dst_prt = 0;
    u_short src_prt = 0;
    libnet_t *l;
    libnet_ptag_t t;
    char *cp;
    char errbuf[LIBNET_ERRBUF_SIZE];
    int i, c, packet_amt, burst_int, burst_amt, build_ip;
	char srcname[100],dstname[100];

    packet_amt  = 0;
    burst_int   = 0;
    burst_amt   = 1;

    printf("libnet 1.1 unreach/admin prohibited request ICMP6[raw]\n");

    /*
     *  Initialize the library.  Root priviledges are required.
     */
    l = libnet_init(
            LIBNET_RAW6,                            /* injection type */
            NULL,                                   /* network interface */
            errbuf);                                /* error buffer */

    if (l == NULL)
    {
        fprintf(stderr, "libnet_init() failed: %s", errbuf);
        exit(EXIT_FAILURE); 
    }

    while((c = getopt(argc, argv, "t:a:i:b:")) != EOF)
    {
        switch (c)
        {
            case 't':
                if (!(cp = strrchr(optarg, '/')))
                {
                    usage(argv[0]);
                    exit(EXIT_FAILURE);
                }
                *cp++ = 0;
                dst_prt = (u_short)atoi(cp);
				dst_ip = libnet_name2addr6(l, optarg, 1);
                if (strncmp((char*)&dst_ip,(char*)&in6addr_error,sizeof(in6addr_error))==0)
                {
                    fprintf(stderr, "Bad IP6 address: %s\n", optarg);
                    exit(EXIT_FAILURE);
                }
                break;
            case 'a':
                packet_amt  = atoi(optarg);
                break;
            case 'i':
                burst_int   = atoi(optarg);
                break;
            case 'b':
                burst_amt   = atoi(optarg);
                break;
            default:
                usage(argv[0]);
                exit(EXIT_FAILURE);
        }
    }

    if (!dst_prt || strncmp((char*)&dst_ip,(char*)&in6addr_error,sizeof(in6addr_error))==0 || !packet_amt)
    {
        usage(argv[0]);
        exit(EXIT_FAILURE);
    }
	
	

    libnet_seed_prand(l);
	libnet_addr2name6_r(src_ip,1,srcname,sizeof(srcname));
	libnet_addr2name6_r(dst_ip,1,dstname,sizeof(dstname));

    for(t = LIBNET_PTAG_INITIALIZER, build_ip = 1; burst_amt--;)
    {
        for (i = 0; i < packet_amt; i++)
        {
			uint8_t payload[56];
			int i;
			for (i=0; i<sizeof(payload); i++)
                            payload[i]='A'+(i%26);
			t = libnet_build_icmpv6_unreach (
                            ICMP6_UNREACH,         /* type */
                            ICMP6_ADM_PROHIBITED,  /* code */
                            0,                     /* checksum */
                            payload,               /* payload */
                            sizeof(payload),       /* payload length */
                            l,                     /* libnet context */
                            t);                    /* libnet ptag */

 

            if (build_ip)
            {
                build_ip = 0;				
                libnet_build_ipv6(0,0,
 				    LIBNET_IPV6_H + LIBNET_ICMPV6_H + sizeof(payload),
 		            IPPROTO_ICMP6,
		            64,
		            src_ip,
		            dst_ip,
                    NULL,
                    0,
                    l,
                    0);
            }
            printf("%15s/%5d -> %15s/%5d\n", 
                    srcname,
                    ntohs(src_prt),
                    dstname,
                    dst_prt);
            c = libnet_write(l);
            if (c == -1)
            {
                fprintf(stderr, "libnet_write: %s\n", libnet_geterror(l));
            }
#if !(__WIN32__)
            usleep(250);
#else
            Sleep(250);
#endif

        }
#if !(__WIN32__)
        sleep(burst_int);
#else
        Sleep(burst_int * 1000);
#endif
    }
    exit(EXIT_SUCCESS);
}
예제 #6
0
int
main(int argc, char **argv)
{
    struct libnet_in6_addr dst_ip;
    struct libnet_in6_addr src_ip;
    u_short dst_prt = 0;
    u_short src_prt = 0;
    libnet_t *l;
    libnet_ptag_t tcp, ip, ip_frag;
    u_char *cp;
    char errbuf[LIBNET_ERRBUF_SIZE];
    int i, j, c, packet_amt, burst_int, burst_amt;
    char srcname[100], dstname[100];
    u_int8_t payload[56];

    packet_amt  = 0;
    burst_int   = 0;
    burst_amt   = 1;
    tcp = ip_frag = ip = LIBNET_PTAG_INITIALIZER;

    printf("libnet 1.1 syn flooding: TCP IPv6 fragments [raw]\n");
    
    l = libnet_init(
            LIBNET_RAW6,                            /* injection type */
            NULL,                                   /* network interface */
            errbuf);                                /* error buffer */

    if (l == NULL)
    {
        fprintf(stderr, "libnet_init() failed: %s", errbuf);
        exit(EXIT_FAILURE); 
    }

    while((c = getopt(argc, argv, "t:a:i:b:")) != EOF)
    {
        switch (c)
        {
            case 't':
                if (!(cp = strrchr(optarg, '/')))
                {
                    usage(argv[0]);
                    exit(EXIT_FAILURE);
                }
                *cp++ = 0;
                dst_prt = (u_short)atoi(cp);
		dst_ip = libnet_name2addr6(l, optarg, 1);
                if (strncmp((char*)&dst_ip,
                   (char*)&in6addr_error,sizeof(in6addr_error))==0)
                {
                    fprintf(stderr, "Bad IPv6 address: %s\n", optarg);
                    exit(EXIT_FAILURE);
                }
                break;
            case 'a':
                packet_amt  = atoi(optarg);
                break;
            case 'i':
                burst_int   = atoi(optarg);
                break;
            case 'b':
                burst_amt   = atoi(optarg);
                break;
            default:
                usage(argv[0]);
                exit(EXIT_FAILURE);
        }
    }

    src_ip = libnet_name2addr6(l, "0:0:0:0:0:0:0:1", LIBNET_DONT_RESOLVE);
    /* src_ip = libnet_name2addr6(l, 
       "3ffe:400:60:4d:250:fcff:fe2c:a9cd", LIBNET_DONT_RESOLVE);
	dst_prt = 113;
	dst_ip = libnet_name2addr6(l, "nathan.ip6.uni-ulm.de", LIBNET_RESOLVE);
	packet_amt = 1;
    */

    if (!dst_prt || strncmp((char*)&dst_ip,
       (char*)&in6addr_error,sizeof(in6addr_error))==0 || !packet_amt)
    {
        usage(argv[0]);
        exit(EXIT_FAILURE);
    }

    libnet_seed_prand(l);
    libnet_addr2name6_r(src_ip, LIBNET_RESOLVE, srcname, sizeof(srcname));
    libnet_addr2name6_r(dst_ip, LIBNET_RESOLVE, dstname, sizeof(dstname));

    for(; burst_amt--;)
    {
        for (i = 0; i < packet_amt; i++)
        {
            for (j = 0; j < 56; j++) payload[j] = 'A' + ((char)(j % 26));

            tcp = libnet_build_tcp(
                src_prt = libnet_get_prand(LIBNET_PRu16),
                dst_prt,
                libnet_get_prand(LIBNET_PRu32),
                libnet_get_prand(LIBNET_PRu32),
                TH_SYN,
                libnet_get_prand(LIBNET_PRu16),
                0,
                0,
                LIBNET_TCP_H,
                NULL,
                0,
                l,
                tcp);
            if (tcp == -1)
            {
                fprintf(stderr, "Can't build or modify TCP header: %s\n",
                        libnet_geterror(l));
                return (EXIT_FAILURE);
            }

            ip_frag = libnet_build_ipv6_frag(
                IPPROTO_TCP,                  /* next header */
                0,                            /* reserved */
                0,                            /* frag bits */
                1,                            /* ip id */
                NULL,
                0,
                l,
                ip_frag);
            if (ip_frag == -1)
            {
                fprintf(stderr, "Can't build or modify TCP header: %s\n",
                        libnet_geterror(l));
                return (EXIT_FAILURE);
            }

            ip = libnet_build_ipv6(
                0, 0,
 	        LIBNET_TCP_H,
 	        IPPROTO_TCP,
	        64,
	        src_ip,
	        dst_ip,
                NULL,
                0,
                l,
                ip);
            if (ip == -1)
            {
                fprintf(stderr, "Can't build or modify TCP header: %s\n",
                        libnet_geterror(l));
                return (EXIT_FAILURE);
            }

            printf("%15s/%5d -> %15s/%5d\n", 
                   srcname,
                   ntohs(src_prt),
                   dstname,
                   dst_prt);

            c = libnet_write(l);
            if (c == -1)
            {
                fprintf(stderr, "libnet_write: %s\n", libnet_geterror(l));
            }
#if !(__WIN32__)
            usleep(250);
#else
            Sleep(250);
#endif

        }
#if !(__WIN32__)
        sleep(burst_int);
#else
        Sleep(burst_int * 1000);
#endif
    }
    exit(EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
    libnet_t *l;
    int r;
    char *device = "eth0";
    struct libnet_ether_addr *mac_address;
    struct in6_addr src_ip;
    struct libnet_in6_addr dst_ip;
    char errbuf[LIBNET_ERRBUF_SIZE];
    libnet_ptag_t icmp_ptag = 0;
    libnet_ptag_t ipv6_ptag = 0;
    char payload[24] = { 0 };

    memset(&src_ip, 0x66, sizeof(src_ip));

    l = libnet_init( LIBNET_RAW6, device, errbuf);

    assert(l);

    mac_address = libnet_get_hwaddr(l);
    assert(mac_address);

    dst_ip = libnet_name2addr6(l, "::1" /* BCAST_ADDR - defined where? */, LIBNET_DONT_RESOLVE);

    memcpy(payload,src_ip.s6_addr,16);
    payload[16] = 2; /* 2 for Target Link-layer Address */
    payload[17] = 1; /* The length of the option */
    memcpy(payload+18,mac_address->ether_addr_octet, 6);

    /* 0x2000: RSO */
    icmp_ptag = libnet_build_icmpv4_echo(
            136,0,0,0x2000,0,
            (uint8_t *)payload,sizeof(payload), l, LIBNET_PTAG_INITIALIZER);
    assert(icmp_ptag);

    ipv6_ptag = libnet_build_ipv6(
            0, 0,
            LIBNET_ICMPV6_H + sizeof(payload), /* ICMPV6_H == ICMPV4_H, luckily */
            IPPROTO_ICMP6,
            255,
            *(struct libnet_in6_addr*)&src_ip,
            dst_ip,
            NULL, 0,
            l, 0);
    assert(icmp_ptag);

    print_pblocks(l);

    {
       uint8_t* pkt1 = NULL;
       uint32_t pkt1_sz = 0;
       r = libnet_pblock_coalesce(l, &pkt1, &pkt1_sz);
       assert(r >= 0);

       libnet_diag_dump_hex(pkt1, LIBNET_IPV6_H, 0, stdout);
       libnet_diag_dump_hex(pkt1+LIBNET_IPV6_H, pkt1_sz-LIBNET_IPV6_H, 0, stdout);

       free(pkt1);
       pkt1 = NULL;
    }

    r = libnet_write(l);
    assert(r >= 0);

    return (EXIT_SUCCESS);
}
예제 #8
0
파일: main.c 프로젝트: mokkeee/C_samples
int main( int argc, char* argv[] )
{
	int		socket;
	unsigned char	data[1280];
	int		size;

	libnet_t	*libnet_context;
	char		libnet_errmsg_buf[LIBNET_ERRBUF_SIZE];

	//socket = sock_afpacket( argv[1] ); 
	socket = sock_udp( argv[2], strtoul(argv[3], NULL, 10 ) );
	if ( socket == -1 )
	{
		fprintf(stderr, "socket error\n");
		return 1;
	}

	// libnetのコンテキスト作成
	libnet_context = libnet_init(LIBNET_RAW6_ADV, NULL, libnet_errmsg_buf );
	//libnet_context = libnet_init(LIBNET_RAW6_ADV, argv[1], libnet_errmsg_buf );
	if ( NULL == libnet_context )
	{
		fprintf(stderr, "%s\n", libnet_errmsg_buf );
		close(socket);
		return 1;
	}
		
	for(;;)
	{
		libnet_ptag_t			ptag_udp, ptag_ip6;
		uint8_t					*pbuf;
		uint32_t				payload_len;
		
		//afpacketからのデータ受信
		//size = recv_packet( socket, sizeof(data), data );
		//print_ipv6_header( data );

		// UDPデータ受信
		size = recv( socket, data, sizeof(data), MSG_TRUNC );
		
		printf("data recieve. ");
		dump_packet( size, data );
		putc('\n', stdout);

		// UDPヘッダ
		ptag_udp = libnet_build_udp(
			(uint16_t)(random()%(65535-49152)+49152),	// source port(49152 - 65535)
			53,		// destination port
			sizeof(header_udp) + size,	// length of UDP pakcet
			0,			// checksum(autofill)
			data,		// payload
			size,		// payload length
			libnet_context,
			0 );
		
		pbuf = libnet_getpbuf( libnet_context, ptag_udp );
		payload_len = libnet_getpbuf_size( libnet_context, ptag_udp );

		// IPv6ヘッダ
		ptag_ip6 = libnet_build_ipv6(
			0,		// Traffic Class
			0,		// Flow Label
			//sizeof(header_ipv6) + sizeof(header_udp) + size,	// total length of the IP packet
			sizeof(header_udp) + size,	// total length of the IP packet
			IPPROTO_UDP,	// Next header(UDP)
			10,		// Hop Limit
			libnet_name2addr6(
				libnet_context, SRC_IP, LIBNET_DONT_RESOLVE ),		// src ip
			libnet_name2addr6(
				libnet_context, DST_IP, LIBNET_DONT_RESOLVE ),		// dst ip
			pbuf,			// payload
			payload_len,	// Payload Length
			libnet_context,
			0 );
		
		// 送信データ取得
		pbuf = libnet_getpbuf( libnet_context, ptag_ip6 );
		payload_len = libnet_getpbuf_size( libnet_context, ptag_ip6 );

		// チェックサム計算←IPv6は未対応の模様
		//libnet_do_checksum( libnet_context, pbuf, IPPROTO_UDP, payload_len );

		printf("data sending. ");
		dump_packet( payload_len, pbuf );

		// データ送信
		//libnet_write_raw_ipv6( libnet_context, data, size );
		libnet_write_raw_ipv6( libnet_context, pbuf, payload_len );

		// 作成データ解放
		libnet_clear_packet( libnet_context );
	}

	return 0;
}
예제 #9
0
int
main(int argc, char **argv)
{
    struct libnet_in6_addr dst_ip;
    struct libnet_in6_addr src_ip;
    u_short dst_prt = 0;
    u_short src_prt = 0;
    libnet_t *l;
    libnet_ptag_t t;
    char *cp;
    char errbuf[LIBNET_ERRBUF_SIZE];
    int i, c, packet_amt, burst_int, burst_amt, build_ip;
    char srcname[100],dstname[100];

    packet_amt  = 0;
    burst_int   = 0;
    burst_amt   = 1;

    printf("libnet 1.1 syn flooding: TCP6[raw]\n");

    /*
     *  Initialize the library.  Root priviledges are required.
     */
    l = libnet_init(
            LIBNET_RAW6,                            /* injection type */
            NULL,                                   /* network interface */
            errbuf);                                /* error buffer */

    if (l == NULL)
    {
        fprintf(stderr, "libnet_init() failed: %s", errbuf);
        exit(EXIT_FAILURE);
    }

    while((c = getopt(argc, argv, "t:a:i:b:")) != EOF)
    {
        switch (c)
        {
        case 't':
            if (!(cp = strrchr(optarg, '/')))
            {
                usage(argv[0]);
                exit(EXIT_FAILURE);
            }
            *cp++ = 0;
            dst_prt = (u_short)atoi(cp);
            dst_ip = libnet_name2addr6(l, optarg, 1);
            if (strncmp((char*)&dst_ip,(char*)&in6addr_error,sizeof(in6addr_error))==0)
            {
                fprintf(stderr, "Bad IP6 address: %s\n", optarg);
                exit(EXIT_FAILURE);
            }
            break;
        case 'a':
            packet_amt  = atoi(optarg);
            break;
        case 'i':
            burst_int   = atoi(optarg);
            break;
        case 'b':
            burst_amt   = atoi(optarg);
            break;
        default:
            usage(argv[0]);
            exit(EXIT_FAILURE);
        }
    }

    src_ip = libnet_name2addr6(l, "0:0:0:0:0:0:0:1", LIBNET_DONT_RESOLVE);
    /*src_ip = libnet_name2addr6(l, "3ffe:400:60:4d:250:fcff:fe2c:a9cd", LIBNET_DONT_RESOLVE);
    dst_prt = 113;
    dst_ip = libnet_name2addr6(l, "nathan.ip6.uni-ulm.de", LIBNET_RESOLVE);
    packet_amt = 1;*/

    if (!dst_prt || strncmp((char*)&dst_ip,(char*)&in6addr_error,sizeof(in6addr_error))==0 || !packet_amt)
    {
        usage(argv[0]);
        exit(EXIT_FAILURE);
    }



    libnet_seed_prand(l);
    libnet_addr2name6_r(src_ip,1,srcname,sizeof(srcname));
    libnet_addr2name6_r(dst_ip,1,dstname,sizeof(dstname));

    for(t = LIBNET_PTAG_INITIALIZER, build_ip = 1; burst_amt--;)
    {
        for (i = 0; i < packet_amt; i++)
        {
            char payload[56];
            int i;
            for (i=0; i<56; i++) payload[i]='A'+((char)(i%26));
            t = libnet_build_tcp(
                    src_prt = libnet_get_prand(LIBNET_PRu16),
                    dst_prt,
                    libnet_get_prand(LIBNET_PRu32),
                    libnet_get_prand(LIBNET_PRu32),
                    TH_SYN,
                    libnet_get_prand(LIBNET_PRu16),
                    0,
                    0,
                    LIBNET_TCP_H,
                    NULL,
                    0,
                    l,
                    t);

            if (build_ip)
            {
                build_ip = 0;
                printf("Packet len = %ld\n",LIBNET_ICMPV6_H+sizeof(payload));
                libnet_build_ipv6(0,0,
                                  LIBNET_TCP_H,
                                  IPPROTO_TCP,
                                  64,
                                  src_ip,
                                  dst_ip,
                                  NULL,
                                  0,
                                  l,
                                  0);
            }
            printf("%15s/%5d -> %15s/%5d\n",
                   srcname,
                   ntohs(src_prt),
                   dstname,
                   dst_prt);
            c = libnet_write(l);
            if (c == -1)
            {
                fprintf(stderr, "libnet_write: %s\n", libnet_geterror(l));
            }
#if !(__WIN32__)
            usleep(250);
#else
            Sleep(250);
#endif

        }
#if !(__WIN32__)
        sleep(burst_int);
#else
        Sleep(burst_int * 1000);
#endif
    }
    exit(EXIT_SUCCESS);
}