[lwip-devel] [bug #41680] raw socket can not receive IPv6 packet

[hanhui]

URL:
  <http://savannah.nongnu.org/bugs/?41680>

                 Summary: raw socket can not receive IPv6 packet
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: hanhui03
            Submitted on: Mon Feb 24 12:23:46 2014
                Category: IPv6
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: git head

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Details:

raw_input() have a bug that drop IPv6 packet:

#if IP_SOF_BROADCAST_RECV
      /* broadcast filter? */
      if (ip_get_option(pcb, SOF_BROADCAST) ||
!ip_addr_isbroadcast(ip_current_dest_addr(), inp))
#if LWIP_IPV6
          && !PCB_ISIPV6(pcb)
#endif /* LWIP_IPV6 */
          )
#endif /* IP_SOF_BROADCAST_RECV */


should be:

#if IP_SOF_BROADCAST_RECV
      /* broadcast filter? */
      if (<ipv6 packet> ||
          ((ip_get_option(pcb, SOF_BROADCAST) ||
!ip_addr_isbroadcast(ip_current_dest_addr(), inp))
#if LWIP_IPV6
          && !PCB_ISIPV6(pcb)
#endif /* LWIP_IPV6 */
          ))
#endif /* IP_SOF_BROADCAST_RECV */

Han.hui




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