Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 2575] New: Some iFCP packets do not decode before of non-nulls in bytes 4-7 of

[bugzilla-daemon@xxxxxxxxxxxxx]

http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2575

           Summary: Some iFCP packets do not decode before of non-nulls in
                    bytes 4-7 of header
           Product: Wireshark
           Version: 1.0.0
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: fschorr@xxxxxxxxxxx


Build Information:
Compiled with GTK+ 2.12.8, with GLib 2.14.6, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.5,
with ADNS, with Lua 5.1, with GnuTLS 1.6.1, with Gcrypt 1.2.3, with MIT
Kerberos, with PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, without
AirPcap.

Built using Microsoft Visual C++ 6.0 build 8804
--
 RFC 4172 section 5.3.1 shows a chart of the iFCP encapsulated Header Format.
It says that bytes 4-7 MUST be zeros.  In reality most vendors are putting some
information in these 4 bytes, particularly Nishon. This caused almost all iFCP
packets to not be decoded for this vendor


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