[lwip-devel] [bug #38066] Raw pcbs can alter packet without eating it

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?38066>

                 Summary: Raw pcbs can alter packet without eating it
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Fr 11 Jan 2013 20:56:29 GMT
                Category: IPv4
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: Confirmed
                 Privacy: Public
             Assigned to: goldsimon
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 1.5.0
            lwIP version: 1.4.1

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Details:

Reported by chrysn on lwip-users on 01-11-2013:
The contrib ping app running in raw api mode prevents local ping-responses
from working.

The reason is that it alters the pbuf (by calling pbuf_header) when returning
"not eaten". After that, the ping recv code in icmp.c fails.




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