Пример #1
0
/** Like ip6_output, but takes and addr_hint pointer that is passed on to netif->addr_hint
 *  before calling ip6_output_if.
 *
 * @param p the packet to send (p->payload points to the data, e.g. next
            protocol header; if dest == IP_HDRINCL, p already includes an
            IPv6 header and p->payload points to that IPv6 header)
 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an
 *         IP address of the netif is selected and used as source address.
 *         if src == NULL, IP6_ADDR_ANY is used as source)
 * @param dest the destination IPv6 address to send the packet to
 * @param hl the Hop Limit value to be set in the IPv6 header
 * @param tc the Traffic Class value to be set in the IPv6 header
 * @param nexth the Next Header to be set in the IPv6 header
 * @param addr_hint address hint pointer set to netif->addr_hint before
 *        calling ip_output_if()
 *
 * @return ERR_RTE if no route is found
 *         see ip_output_if() for more return values
 */
err_t
ip6_output_hinted(struct pbuf *p, ip6_addr_t *src, ip6_addr_t *dest,
                  u8_t hl, u8_t tc, u8_t nexth, u8_t *addr_hint)
{
    struct netif *netif;
    err_t err;

    /* pbufs passed to IP must have a ref-count of 1 as their payload pointer
       gets altered as the packet is passed down the stack */
    LWIP_ASSERT("p->ref == 1", p->ref == 1);

    if ((netif = ip6_route(src, dest)) == NULL) {
        LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
                                IP6_ADDR_BLOCK1(dest),
                                IP6_ADDR_BLOCK2(dest),
                                IP6_ADDR_BLOCK3(dest),
                                IP6_ADDR_BLOCK4(dest),
                                IP6_ADDR_BLOCK5(dest),
                                IP6_ADDR_BLOCK6(dest),
                                IP6_ADDR_BLOCK7(dest),
                                IP6_ADDR_BLOCK8(dest)));
        IP6_STATS_INC(ip6.rterr);
        return ERR_RTE;
    }

    NETIF_SET_HWADDRHINT(netif, addr_hint);
    err = ip6_output_if(p, src, dest, hl, tc, nexth, netif);
    NETIF_SET_HWADDRHINT(netif, NULL);

    return err;
}
Пример #2
0
static void poll_ip6_addr(TimerHandle_t pxTimer){
    struct netif *netif_arg = (struct netif *) pvTimerGetTimerID( pxTimer ); 
    bool slaac_done = false;

    //0th  address is link local, assume 1th address is SLAAC
    for(int i = 0; i < 4; i++){
        if(netif_arg->ip6_addr[1].addr[i] != 0){
            slaac_done = true;
            break;
        }
    }
    if(slaac_done){
        for(int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++){
            uart_printf("IPv6 Address %d of interface %c%c set "
                    "to %04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx\n",
                    i,
                    netif_arg->name[0], netif_arg->name[1],
                    IP6_ADDR_BLOCK1(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK2(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK3(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK4(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK5(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK6(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK7(&netif_arg->ip6_addr[i]),
                    IP6_ADDR_BLOCK8(&netif_arg->ip6_addr[i]));
        }
        xTimerStop( pxTimer, 0 );
    }
}
Пример #3
0
void
cliPrintVar(const clivalue_t *var, uint8_t full) {
    switch (var->type) {
    case VAR_UINT32:
        cli_printf("%u", *(uint32_t*)var->ptr);
        break;
    case VAR_UINT16:
        cli_printf("%u", *(uint16_t*)var->ptr);
        break;
#if CLI_TYPE_IP4
    case VAR_IP4:
        {
            ip_addr_t *ptr = (ip_addr_t*)var->ptr;
            cli_printf(IP_DIGITS_FMT, IP_DIGITS(ptr));
            break;
        }
#endif
#if CLI_TYPE_IP6
    case VAR_IP6:
        {
            ip6_addr_t *ptr = (ip6_addr_t*)var->ptr;
            cli_printf(IP6_DIGITS_FMT,
                    IP6_ADDR_BLOCK1(ptr),
                    IP6_ADDR_BLOCK2(ptr),
                    IP6_ADDR_BLOCK3(ptr),
                    IP6_ADDR_BLOCK4(ptr),
                    IP6_ADDR_BLOCK5(ptr),
                    IP6_ADDR_BLOCK6(ptr),
                    IP6_ADDR_BLOCK7(ptr),
                    IP6_ADDR_BLOCK8(ptr));
            break;
        }
#endif
#if CLI_TYPE_HEX
    case VAR_HEX:
        {
            uint8_t *ptr = (uint8_t*)var->ptr;
            int i;
            for (i = 0; i < var->len; i++) {
                cli_printf("%02x", *ptr++);
            }
            break;
        }
#endif
#if CLI_TYPE_FLAG
    case VAR_FLAG:
        if ( (*(uint32_t*)var->ptr) & var->len ) {
            cli_puts("true");
        } else {
            cli_puts("false");
        }
        break;
#endif
    case VAR_INVALID:
        break;
    }
}
Пример #4
0
/* 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"));
}
Пример #5
0
/** Like ip6_output, but takes and addr_hint pointer that is passed on to netif->addr_hint
 *  before calling ip6_output_if.
 *
 * @param p the packet to send (p->payload points to the data, e.g. next
            protocol header; if dest == IP_HDRINCL, p already includes an
            IPv6 header and p->payload points to that IPv6 header)
 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an
 *         IP address of the netif is selected and used as source address.
 *         if src == NULL, IP6_ADDR_ANY is used as source)
 * @param dest the destination IPv6 address to send the packet to
 * @param hl the Hop Limit value to be set in the IPv6 header
 * @param tc the Traffic Class value to be set in the IPv6 header
 * @param nexth the Next Header to be set in the IPv6 header
 * @param addr_hint address hint pointer set to netif->addr_hint before
 *        calling ip_output_if()
 *
 * @return ERR_RTE if no route is found
 *         see ip_output_if() for more return values
 */
err_t
ip6_output_hinted(struct pbuf *p, ip6_addr_t *src, ip6_addr_t *dest,
          u8_t hl, u8_t tc, u8_t nexth, u8_t *addr_hint)
{
  struct netif *netif;
  struct ip6_hdr *ip6hdr;
  ip6_addr_t src_addr, dest_addr;
  err_t err;

  /* pbufs passed to IP must have a ref-count of 1 as their payload pointer
     gets altered as the packet is passed down the stack */
  LWIP_ASSERT("p->ref == 1", p->ref == 1);

  if (dest != IP_HDRINCL) {
    netif = ip6_route(src, dest);
  } else {
    /* IP header included in p, read addresses. */
    ip6hdr = (struct ip6_hdr *)p->payload;
    ip6_addr_copy(src_addr, ip6hdr->src);
    ip6_addr_copy(dest_addr, ip6hdr->dest);
    netif = ip6_route(&src_addr, &dest_addr);
  }

  if (netif == NULL) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
        IP6_ADDR_BLOCK1(dest),
        IP6_ADDR_BLOCK2(dest),
        IP6_ADDR_BLOCK3(dest),
        IP6_ADDR_BLOCK4(dest),
        IP6_ADDR_BLOCK5(dest),
        IP6_ADDR_BLOCK6(dest),
        IP6_ADDR_BLOCK7(dest),
        IP6_ADDR_BLOCK8(dest)));
    IP6_STATS_INC(ip6.rterr);
    return ERR_RTE;
  }

  NETIF_SET_HWADDRHINT(netif, addr_hint);
  err = ip6_output_if(p, src, dest, hl, tc, nexth, netif);
  NETIF_SET_HWADDRHINT(netif, NULL);

  return err;
}
/** Like ip6_output, but takes and addr_hint pointer that is passed on to netif->addr_hint
 *  before calling ip6_output_if.
 *
 * @param p the packet to send (p->payload points to the data, e.g. next
            protocol header; if dest == IP_HDRINCL, p already includes an
            IPv6 header and p->payload points to that IPv6 header)
 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an
 *         IP address of the netif is selected and used as source address.
 *         if src == NULL, IP6_ADDR_ANY is used as source)
 * @param dest the destination IPv6 address to send the packet to
 * @param hl the Hop Limit value to be set in the IPv6 header
 * @param tc the Traffic Class value to be set in the IPv6 header
 * @param nexth the Next Header to be set in the IPv6 header
 * @param addr_hint address hint pointer set to netif->addr_hint before
 *        calling ip_output_if()
 *
 * @return ERR_RTE if no route is found
 *         see ip_output_if() for more return values
 */
err_t
ip6_output_hinted(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest,
          u8_t hl, u8_t tc, u8_t nexth, u8_t *addr_hint)
{
  struct netif *netif;
  struct ip6_hdr *ip6hdr;
  ip6_addr_t src_addr, dest_addr;
  err_t err;

  LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p);

  if (dest != IP_HDRINCL) {
    netif = ip6_route(src, dest);
  } else {
    /* IP header included in p, read addresses. */
    ip6hdr = (struct ip6_hdr *)p->payload;
    ip6_addr_copy(src_addr, ip6hdr->src);
    ip6_addr_copy(dest_addr, ip6hdr->dest);
    netif = ip6_route(&src_addr, &dest_addr);
  }

  if (netif == NULL) {
    LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n",
        IP6_ADDR_BLOCK1(dest),
        IP6_ADDR_BLOCK2(dest),
        IP6_ADDR_BLOCK3(dest),
        IP6_ADDR_BLOCK4(dest),
        IP6_ADDR_BLOCK5(dest),
        IP6_ADDR_BLOCK6(dest),
        IP6_ADDR_BLOCK7(dest),
        IP6_ADDR_BLOCK8(dest)));
    IP6_STATS_INC(ip6.rterr);
    return ERR_RTE;
  }

  NETIF_SET_HWADDRHINT(netif, addr_hint);
  err = ip6_output_if(p, src, dest, hl, tc, nexth, netif);
  NETIF_SET_HWADDRHINT(netif, NULL);

  return err;
}
/**
 * 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;
}
Пример #8
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
 * @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;
}