[lwip-devel] [bug #22120] Problem in icmp_dest_unreach

[Bill Auerbach]

URL:
  <http://savannah.nongnu.org/bugs/?22120>

                 Summary: Problem in icmp_dest_unreach
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: billauerbach
            Submitted on: Friday 01/25/2008 at 12:12
                Category: IPv4
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 

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Details:

The data length reported by wireshark for the UDP portion of this packet is
wrong.  It’s left at the length of the packet that was received that was not
reachable.

Here is my solution – I’m not sure if this is the way to go about it, but
wireshark no longer complains:

Added to icmp_dest_unreach

  struct udp_hdr *uhdr;

After:  iphdr = p->payload;

  uhdr = (struct udp_hdr *) ((u8_t *) p->payload + IP_HLEN);
  uhdr->len = htons(8);





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