Wireshark-bugs: [Wireshark-bugs] [Bug 5164] New: when capture incudes pppoe header the rtp 2833

Date: Tue, 31 Aug 2010 10:47:37 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5164

           Summary: when capture incudes pppoe header the rtp 2833 will be
                    displayed as strange words
           Product: Wireshark
           Version: 1.4.0
          Platform: All
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: sideslinder@xxxxxxxxx


Build Information:
Version 1.4.0 (SVN Rev 34005 from /trunk-1.4)

Copyright 1998-2010 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GTK+ 2.16.6, (32-bit) with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Aug
29 2010), with AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.5, Gcrypt 1.4.5, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
as a cap file includes the pppoe header the rtp event 2833 will be wrongly
displayed with strange charactors. When display the flow of voip calls, the
graph will wrongly display the 2833 play load type information. I guess the
wireshark assumes the cap is ethernet packet, and goes the fixed offset to get
the 2833 playload type. Is it so?

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