https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6122
Summary: Malformed Packet in decode for BGP-AD update
Product: Wireshark
Version: 1.6.0
Platform: x86
OS/Version: Windows XP
Status: NEW
Severity: Major
Priority: Low
Component: Wireshark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: ryan.hoffman@xxxxxxxxx
Build Information:
Version 1.6.0 (SVN Rev 37592 from /trunk-1.6)
Copyright 1998-2011 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 (32-bit) with GTK+ 2.22.1, with GLib 2.26.1, with WinPcap (version
unknown), with libz 1.2.5, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.10.3,
with
Gcrypt 1.4.6, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jun
7 2011), 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 2.10.3, Gcrypt 1.4.6, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 21022
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
I'm trying to decode BGP Update packets for a BGP-AD (autodiscovery) VPLS L2VPN
topology. This extension to BGP is defined in RFC6074.
I'm getting 'Malformed Packet' errors. Wireshark is able to decode up to the
point of the Subnetwork point of attachment, but does not further decode the
remaining fields of this update found on page 13 of the RFC (Length, Route
Distinguisher, PE_addr).
Please find a capture attached.
I believe the decode for the first NLRI should be:
00 0c Length: 12
00 00 fe 0e 00 00 07 f6 RD: 65038:2038
ac 19 8d 18 PE IP addr: 172.25.141.24
Thanks,
Ryan
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