コード例 #1
0
ファイル: pxudp.c プロジェクト: gvsurenderreddy/virtualbox
/**
 * Outbound TTL/HOPL check.
 */
static int
pxudp_ttl_expired(struct pbuf *p)
{
    int ttl;

    if (ip_current_is_v6()) {
        ttl = IP6H_HOPLIM(ip6_current_header());
    }
    else {
        ttl = IPH_TTL(ip_current_header());
    }

    if (RT_UNLIKELY(ttl <= 1)) {
        int status = pbuf_header(p, ip_current_header_tot_len() + UDP_HLEN);
        if (RT_LIKELY(status == 0)) {
            if (ip_current_is_v6()) {
                icmp6_time_exceeded(p, ICMP6_TE_HL);
            }
            else {
                icmp_time_exceeded(p, ICMP_TE_TTL);
            }
        }
        pbuf_free(p);
        return 1;
    }

    return 0;
}
コード例 #2
0
ファイル: ip6.c プロジェクト: gvsurenderreddy/virtualbox
/* Print an IPv6 header by using LWIP_DEBUGF
 * @param p an IPv6 packet, p->payload pointing to the IPv6 header
 */
void
ip6_debug_print(struct pbuf *p)
{
  struct ip6_hdr *ip6hdr = (struct ip6_hdr *)p->payload;

  LWIP_UNUSED_ARG(ip6hdr);

  LWIP_DEBUGF(IP6_DEBUG, ("IPv6 header:\n"));
  LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n"));
  LWIP_DEBUGF(IP6_DEBUG, ("| %2"U16_F" |  %3"U16_F"  |      %7"U32_F"     | (ver, class, flow)\n",
                    IP6H_V(ip6hdr),
                    IP6H_TC(ip6hdr),
                    IP6H_FL(ip6hdr)));
  LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n"));
  LWIP_DEBUGF(IP6_DEBUG, ("|     %5"U16_F"     |  %3"U16_F"  |  %3"U16_F"  | (plen, nexth, hopl)\n",
                    IP6H_PLEN(ip6hdr),
                    IP6H_NEXTH(ip6hdr),
                    IP6H_HOPLIM(ip6hdr)));
  LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n"));
  LWIP_DEBUGF(IP6_DEBUG, ("|  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |  %4"X32_F" | (src)\n",
                    IP6_ADDR_BLOCK1(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK2(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK3(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK4(&(ip6hdr->src))));
  LWIP_DEBUGF(IP6_DEBUG, ("|  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |\n",
                    IP6_ADDR_BLOCK5(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK6(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK7(&(ip6hdr->src)),
                    IP6_ADDR_BLOCK8(&(ip6hdr->src))));
  LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n"));
  LWIP_DEBUGF(IP6_DEBUG, ("|  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |  %4"X32_F" | (dest)\n",
                    IP6_ADDR_BLOCK1(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK2(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK3(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK4(&(ip6hdr->dest))));
  LWIP_DEBUGF(IP6_DEBUG, ("|  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |  %4"X32_F" |\n",
                    IP6_ADDR_BLOCK5(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK6(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK7(&(ip6hdr->dest)),
                    IP6_ADDR_BLOCK8(&(ip6hdr->dest))));
  LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n"));
}
コード例 #3
0
ファイル: pxudp.c プロジェクト: gvsurenderreddy/virtualbox
static void
pxudp_pcb_forward_outbound(struct pxudp *pxudp, struct pbuf *p,
                           ip_addr_t *addr, u16_t port)
{
    int status;

    LWIP_UNUSED_ARG(addr);
    LWIP_UNUSED_ARG(port);

    if (!pxudp->is_mapped && pxudp_ttl_expired(p)) {
        return;
    }

    if (!ip_current_is_v6()) { /* IPv4 */
        const struct ip_hdr *iph = ip_current_header();
        int ttl, tos, df;

        /*
         * Different OSes have different socket options for DF.
         * Unlike pxping.c, we can't use IP_HDRINCL here as it's only
         * valid for SOCK_RAW.
         */
#     define USE_DF_OPTION(_Optname)                    \
        const int dfopt = _Optname;                     \
        const char * const dfoptname = #_Optname;
#if   defined(IP_MTU_DISCOVER)  /* Linux */
        USE_DF_OPTION(IP_MTU_DISCOVER);
#elif defined(IP_DONTFRAG)      /* Solaris 11+, FreeBSD */
        USE_DF_OPTION(IP_DONTFRAG);
#elif defined(IP_DONTFRAGMENT)  /* Windows */
        USE_DF_OPTION(IP_DONTFRAGMENT);
#else
        USE_DF_OPTION(0);
#endif

        ttl = IPH_TTL(iph);
        if (!pxudp->is_mapped) {
            LWIP_ASSERT1(ttl > 1);
            --ttl;
        }

        if (ttl != pxudp->ttl) {
            status = setsockopt(pxudp->sock, IPPROTO_IP, IP_TTL,
                                (char *)&ttl, sizeof(ttl));
            if (RT_LIKELY(status == 0)) {
                pxudp->ttl = ttl;
            }
            else {
                DPRINTF(("IP_TTL: %R[sockerr]\n", SOCKERRNO()));
            }
        }

        tos = IPH_TOS(iph);
        if (tos != pxudp->tos) {
            status = setsockopt(pxudp->sock, IPPROTO_IP, IP_TOS,
                                (char *)&tos, sizeof(tos));
            if (RT_LIKELY(status == 0)) {
                pxudp->tos = tos;
            }
            else {
                DPRINTF(("IP_TOS: %R[sockerr]\n", SOCKERRNO()));
            }
        }

        if (dfopt) {
            df = (IPH_OFFSET(iph) & PP_HTONS(IP_DF)) != 0;
#if defined(IP_MTU_DISCOVER)
            df = df ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
#endif
            if (df != pxudp->df) {
                status = setsockopt(pxudp->sock, IPPROTO_IP, dfopt,
                                    (char *)&df, sizeof(df));
                if (RT_LIKELY(status == 0)) {
                    pxudp->df = df;
                }
                else {
                    DPRINTF(("%s: %R[sockerr]\n", dfoptname, SOCKERRNO()));
                }
            }
        }
    }
    else { /* IPv6 */
        const struct ip6_hdr *iph = ip6_current_header();
        int ttl;

        ttl = IP6H_HOPLIM(iph);
        if (!pxudp->is_mapped) {
            LWIP_ASSERT1(ttl > 1);
            --ttl;
        }

        if (ttl != pxudp->ttl) {
            status = setsockopt(pxudp->sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
                                (char *)&ttl, sizeof(ttl));
            if (RT_LIKELY(status == 0)) {
                pxudp->ttl = ttl;
            }
            else {
                DPRINTF(("IPV6_UNICAST_HOPS: %R[sockerr]\n", SOCKERRNO()));
            }
        }
    }

    if (pxudp->pcb->local_port == 53) {
        ++pxudp->count;
    }

    proxy_sendto(pxudp->sock, p, NULL, 0);
    pbuf_free(p);
}
コード例 #4
0
/**
 * Forwards an IPv6 packet. It finds an appropriate route for the
 * packet, decrements the HL value of the packet, and outputs
 * the packet on the appropriate interface.
 *
 * @param p the packet to forward (p->payload points to IP header)
 * @param iphdr the IPv6 header of the input packet
 * @param inp the netif on which this packet was received
 */
static void
ip6_forward(struct pbuf *p, struct ip6_hdr *iphdr, struct netif *inp)
{
  struct netif *netif;

  /* do not forward link-local addresses */
  if (ip6_addr_islinklocal(ip6_current_dest_addr())) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not forwarding link-local address.\n"));
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return;
  }

  /* Find network interface where to forward this IP packet to. */
  netif = ip6_route(IP6_ADDR_ANY6, ip6_current_dest_addr());
  if (netif == NULL) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
        IP6_ADDR_BLOCK1(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK2(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK3(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK4(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK5(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK6(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK7(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK8(ip6_current_dest_addr())));
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_dest_unreach(p, ICMP6_DUR_NO_ROUTE);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return;
  }
  /* Do not forward packets onto the same network interface on which
   * they arrived. */
  if (netif == inp) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not bouncing packets back on incoming interface.\n"));
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return;
  }

  /* decrement HL */
  IP6H_HOPLIM_SET(iphdr, IP6H_HOPLIM(iphdr) - 1);
  /* send ICMP6 if HL == 0 */
  if (IP6H_HOPLIM(iphdr) == 0) {
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_time_exceeded(p, ICMP6_TE_HL);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.drop);
    return;
  }

  if (netif->mtu && (p->tot_len > netif->mtu)) {
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_packet_too_big(p, netif->mtu);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.drop);
    return;
  }

  LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: forwarding packet to %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
      IP6_ADDR_BLOCK1(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK2(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK3(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK4(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK5(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK6(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK7(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK8(ip6_current_dest_addr())));

  /* transmit pbuf on chosen interface */
  netif->output_ip6(netif, p, ip6_current_dest_addr());
  IP6_STATS_INC(ip6.fw);
  IP6_STATS_INC(ip6.xmit);
  return;
}
コード例 #5
0
ファイル: pxping_win.c プロジェクト: bayasist/vbox
static void
pxping_recv6(void *arg, struct pbuf *p)
{
    struct pxping *pxping = (struct pxping *)arg;
    struct icmp6_echo_hdr *icmph;
    size_t bufsize;
    struct pong6 *pong;
    int mapped;
    void *reqdata;
    size_t reqsize;
    struct sockaddr_in6 src, dst;
    int hopl;
    IP_OPTION_INFORMATION opts;
    int status;

    pong = NULL;

    icmph = (struct icmp6_echo_hdr *)p->payload;

    memset(&dst, 0, sizeof(dst));
    dst.sin6_family = AF_INET6;
    mapped = pxremap_outbound_ip6((ip6_addr_t *)&dst.sin6_addr,
                                  ip6_current_dest_addr());
    if (RT_UNLIKELY(mapped == PXREMAP_FAILED)) {
        goto out;
    }

    hopl = IP6H_HOPLIM(ip6_current_header());
    if (mapped == PXREMAP_ASIS) {
        if (RT_UNLIKELY(hopl == 1)) {
            status = pbuf_header(p, ip_current_header_tot_len());
            if (RT_LIKELY(status == 0)) {
                icmp6_time_exceeded(p, ICMP6_TE_HL);
            }
            goto out;
        }
        --hopl;
    }

    status = pbuf_header(p, -(u16_t)sizeof(*icmph)); /* to ping payload */
    if (RT_UNLIKELY(status != 0)) {
        goto out;
    }

    bufsize = sizeof(ICMPV6_ECHO_REPLY) + p->tot_len;
    pong = (struct pong6 *)malloc(sizeof(*pong) - sizeof(pong->buf) + bufsize);
    if (RT_UNLIKELY(pong == NULL)) {
        goto out;
    }
    pong->bufsize = bufsize;
    pong->netif = pxping->netif;

    ip6_addr_copy(pong->reqsrc, *ip6_current_src_addr());
    memcpy(&pong->reqicmph, icmph, sizeof(*icmph));

    memset(pong->buf, 0xa5, pong->bufsize);

    pong->reqsize = reqsize = p->tot_len;
    if (p->next == NULL) {
        /* single pbuf can be directly used as request data source */
        reqdata = p->payload;
    }
    else {
        /* data from pbuf chain must be concatenated */
        pbuf_copy_partial(p, pong->buf, p->tot_len, 0);
        reqdata = pong->buf;
    }

    memset(&src, 0, sizeof(src));
    src.sin6_family = AF_INET6;
    src.sin6_addr = in6addr_any; /* let the OS select host source address */

    memset(&opts, 0, sizeof(opts));
    opts.Ttl = hopl;

    status = Icmp6SendEcho2(pxping->hdl6, NULL,
                            pxping->callback6, pong,
                            &src, &dst, reqdata, (WORD)reqsize, &opts,
                            pong->buf, (DWORD)pong->bufsize,
                            5 * 1000 /* ms */);

    if (RT_UNLIKELY(status != 0)) {
        DPRINTF(("Icmp6SendEcho2: unexpected status %d\n", status));
        goto out;
    }
    else if ((status = GetLastError()) != ERROR_IO_PENDING) {
        int code;

        DPRINTF(("Icmp6SendEcho2: error %d\n", status));
        switch (status) {
        case ERROR_NETWORK_UNREACHABLE:
        case ERROR_HOST_UNREACHABLE:
            code = ICMP6_DUR_NO_ROUTE;
            break;
        default:
            code = -1;
            break;
        }

        if (code != -1) {
            /* move payload back to IP header */
            status = pbuf_header(p, (u16_t)(sizeof(*icmph)
                                            + ip_current_header_tot_len()));
            if (RT_LIKELY(status == 0)) {
                icmp6_dest_unreach(p, code);
            }
        }
        goto out;
    }
    
    pong = NULL;                /* callback owns it now */
  out:
    if (pong != NULL) {
        free(pong);
    }
    pbuf_free(p);
}
コード例 #6
0
ファイル: lwip_ping6.c プロジェクト: Ga-vin/libsylixos
/*********************************************************************************************************
** 函数名称: __inetPingRecv
** 功能描述: 接收 ping 包
** 输 入  : iSock         socket
**           usSeqRecv     需要判断的 seq
**           piHL          接收的 hop limit
** 输 出  : ERROR
** 全局变量: 
** 调用模块: 
*********************************************************************************************************/
static INT  __inetPing6Recv (INT  iSock, UINT16  usSeqRecv, INT  *piHL)
{
             CHAR                   cBuffer[512];
             
             INT                    iCnt = 20;                          /*  默认最多接收的数据包数      */
    REGISTER ssize_t                sstLen;
             INT                    iAddLen = sizeof(struct sockaddr_in6);
             struct sockaddr_in6    sockaddrin6From;
             
             struct ip6_hdr        *ip6hdrFrom;
             struct icmp6_echo_hdr *icmp6hdrFrom;
             
             u8_t                   nexth;
             INT                    hlen;
             INT                    totalhlen = 0;
             u8_t                  *pucData;

    *piHL = 0;

    while ((sstLen = recvfrom(iSock, cBuffer, sizeof(cBuffer), 0, 
                              (struct sockaddr *)&sockaddrin6From, (socklen_t *)&iAddLen)) > 0) {
        
        if (sstLen >= (sizeof(struct ip6_hdr) + sizeof(struct icmp6_echo_hdr))) {
            ip6hdrFrom = (struct ip6_hdr *)cBuffer;
            hlen       = IP6_HLEN;
            totalhlen  = IP6_HLEN;
            nexth      = IP6H_NEXTH(ip6hdrFrom);
            *piHL      = IP6H_HOPLIM(ip6hdrFrom);
            
            pucData    = (u8_t *)cBuffer;
            pucData   += IP6_HLEN;
            
            while (nexth != IP6_NEXTH_NONE) {
                switch (nexth) {
                
                case IP6_NEXTH_HOPBYHOP:
                case IP6_NEXTH_DESTOPTS:
                case IP6_NEXTH_ROUTING:
                    nexth      = *pucData;
                    hlen       = 8 * (1 + *(pucData + 1));
                    totalhlen += hlen;
                    pucData   += hlen;
                    break;
                    
                case IP6_NEXTH_FRAGMENT:
                    nexth      = *pucData;
                    hlen       = 8;
                    totalhlen += hlen;
                    pucData   += hlen;
                    break;
                    
                default:
                    goto    __hdrlen_cal_ok;
                    break;
                }
            }
            
__hdrlen_cal_ok:
            icmp6hdrFrom = (struct icmp6_echo_hdr *)(cBuffer + totalhlen);
            if ((icmp6hdrFrom->id == 0xAFAF) && (icmp6hdrFrom->seqno == htons(usSeqRecv))) {
                return  (ERROR_NONE);
            }
        }
        
        iCnt--;                                                         /*  接收到错误的数据包太多      */
        if (iCnt < 0) {
            break;                                                      /*  退出                        */
        }
    }
    
    return  (PX_ERROR);
}
コード例 #7
0
ファイル: ip6.c プロジェクト: gvsurenderreddy/virtualbox
/**
 * Forwards an IPv6 packet. It finds an appropriate route for the
 * packet, decrements the HL value of the packet, and outputs
 * the packet on the appropriate interface.
 *
 * @param p the packet to forward (p->payload points to IP header)
 * @param iphdr the IPv6 header of the input packet
 * @param inp the netif on which this packet was received
 * @return -1 if packet is to be dropped, 0 if there's no route, 1 if forwarded
 */
static int
ip6_forward(struct pbuf *p, struct ip6_hdr *iphdr, struct netif *inp)
{
  enum { FWD_DROP = -1, FWD_PROXY = 0, FWD_FORWARDED = 1 };
  struct netif *netif;

  /* do not forward link-local addresses */
  if (ip6_addr_islinklocal(ip6_current_dest_addr())) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not forwarding link-local address.\n"));
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return FWD_DROP;
  }

  /* Find network interface where to forward this IP packet to. */
  netif = ip6_route_fwd(ip6_current_dest_addr());
  if (netif == NULL) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
        IP6_ADDR_BLOCK1(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK2(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK3(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK4(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK5(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK6(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK7(ip6_current_dest_addr()),
        IP6_ADDR_BLOCK8(ip6_current_dest_addr())));
#if LWIP_CONNECTION_PROXY
    return FWD_PROXY;
#else /* !LWIP_CONNECTION_PROXY */
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_dest_unreach(p, ICMP6_DUR_NO_ROUTE);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return FWD_DROP;
#endif /* !LWIP_CONNECTION_PROXY */
  }

#if LWIP_CONNECTION_PROXY
  /* The packet is for a destination on a directly connected network.
   * Check for addresses in that address space that proxy wants to
   * remap (e.g. to host loopback address/es) and hand it off to
   * proxy */
  if (netif != netif_default
      && proxy_ip6_divert_hook != NULL
      && (*proxy_ip6_divert_hook)(netif, ip6_current_dest_addr()))
  {
    return FWD_PROXY;
  }
#endif /* LWIP_CONNECTION_PROXY */

  /* Do not forward packets onto the same network interface on which
   * they arrived. */
  if (netif == inp) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not bouncing packets back on incoming interface.\n"));
    IP6_STATS_INC(ip6.rterr);
    IP6_STATS_INC(ip6.drop);
    return FWD_DROP;
  }

  /* decrement HL */
  IP6H_HOPLIM_SET(iphdr, IP6H_HOPLIM(iphdr) - 1);
  /* send ICMP6 if HL == 0 */
  if (IP6H_HOPLIM(iphdr) == 0) {
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_time_exceeded(p, ICMP6_TE_HL);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.drop);
    return FWD_DROP;
  }

  if (netif->mtu && (p->tot_len > netif->mtu)) {
#if LWIP_ICMP6
    /* Don't send ICMP messages in response to ICMP messages */
    if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) {
      icmp6_packet_too_big(p, netif->mtu);
    }
#endif /* LWIP_ICMP6 */
    IP6_STATS_INC(ip6.drop);
    return FWD_DROP;
  }

  LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: forwarding packet to %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
      IP6_ADDR_BLOCK1(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK2(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK3(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK4(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK5(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK6(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK7(ip6_current_dest_addr()),
      IP6_ADDR_BLOCK8(ip6_current_dest_addr())));

  /* transmit pbuf on chosen interface */
  netif->output_ip6(netif, p, ip6_current_dest_addr());
  IP6_STATS_INC(ip6.fw);
  IP6_STATS_INC(ip6.xmit);
  return FWD_FORWARDED;
}