PTPv2 Malformed Packet (Exception occurred)

asked 2019-06-07 07:15:39 +0000

kscbroadcast gravatar image

updated 2019-06-07 07:33:10 +0000

grahamb gravatar image

When capturing the traffic from a PTP GM I have under test on CentOS I get this error on all "Announce Messages"

Expert Info (Error/Malformed): Malformed Packet (Exception occurred)

When I run the same capture on a Windows 10 Machine I have no error. If I save the file captured on Windows and open it on CentOS the error is present.

This leads me to think that theres is something different between the PTP protocol is decoded(??) on a Linux system compared to a Windows System.

Anyone have any thoughts?

System Details:

Version 1.10.14 (Git Rev Unknown from unknown)

Copyright 1998-2015 Gerald Combs <[email protected]> and contributors.
This is free software; see the source for copying conditions. There is NO

Compiled (64-bit) with GTK+ 2.24.31, with Cairo 1.14.8, with Pango 1.40.4, with
GLib 2.54.2, with libpcap, with libz 1.2.7, with POSIX capabilities (Linux),
without libnl, with SMI 0.4.8, with c-ares 1.10.0, with Lua 5.1, without Python,
with GnuTLS 3.3.26, with Gcrypt 1.5.3, with MIT Kerberos, without GeoIP, without
PortAudio, with AirPcap.

Running on Linux 3.10.0-957.12.2.el7.x86_64, with locale en_GB.UTF-8, with
libpcap version 1.5.3, with libz 1.2.7, GnuTLS 3.3.29, Gcrypt 1.5.3, without
Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz

Built using gcc 4.8.5 20150623 (Red Hat 4.8.5-36).
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And what Wireshark version is being used on the Windows 10 system? I suspect it's much more recent than the ancient 1.10.14 being used on your Linux system.

grahamb gravatar imagegrahamb ( 2019-06-07 07:34:38 +0000 )edit

Version 3.0.1 (v3.0.1-0-gea351cd8)

kscbroadcast gravatar imagekscbroadcast ( 2019-06-07 07:47:52 +0000 )edit

I think the issue is that there's a bug in the older 1.10.14 version, that's been fixed in the more recent version.

grahamb gravatar imagegrahamb ( 2019-06-07 08:12:06 +0000 )edit

Any tips on installing 3.0.2 on CentOS7

I've googled and found numerous guides but when I unzip the tar and run ./configure it fails as no such file

kscbroadcast gravatar imagekscbroadcast ( 2019-06-07 18:00:29 +0000 )edit

Wireshark no longer supports autotools, so current releases do not include a configure script. You need to install CMake (it may be a package offered by CentOS) and use it.

Guy Harris gravatar imageGuy Harris ( 2019-06-07 20:49:06 +0000 )edit