Wireshark-bugs: [Wireshark-bugs] [Bug 4248] New: Protocol Independent Multicast v2 Graft-ack not
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 17 Nov 2009 11:41:37 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4248

           Summary: Protocol Independent Multicast v2 Graft-ack not decoding
           Product: Wireshark
           Version: 1.2.4
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: bstewart@xxxxxxxxxx


Build Information:
Version 1.2.4 (SVN Rev 30978)

Copyright 1998-2009 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+ 2.16.2, with GLib 2.20.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.8.1, with Gcrypt 1.4.4, with MIT
Kerberos, with GeoIP, with PortAudio V19-devel (built Nov 16 2009), with
AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.1
(packet.dll version 4.1.0.1753), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.1, Gcrypt 1.4.4, 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.
--
Wireshark is not properly decoding the Graft-ack messages for PIMv2.  The PIM
Parameters section is blank.  It should display the upstream neighbor etc.

I have attached the captured packets to assist in troubleshooting.  The text
output of the decode from 1.2.4 wireshark is shown below.

No.     Time        Source                Destination           Protocol Info
      1 0.000000    10.4.6.1              10.4.6.2              PIMv2    Graft

Frame 1 (68 bytes on wire, 68 bytes captured)
Ethernet II, Src: 00:00:00_01:01:02 (00:00:00:01:01:02), Dst: MarvellS_3a:40:8c
(00:50:43:3a:40:8c)
Internet Protocol, Src: 10.4.6.1 (10.4.6.1), Dst: 10.4.6.2 (10.4.6.2)
Protocol Independent Multicast
    Version: 2
    Type: Graft (6)
    Checksum: 0x3137 [correct]
    PIM parameters
        Upstream-neighbor: 10.4.6.2
        Groups: 1
        Holdtime: 0
        Group 0: 225.2.2.6/32
            Join: 1
                IP address: 172.25.6.94/32
            Prune: 0

No.     Time        Source                Destination           Protocol Info
      2 18.076161   10.4.6.2              10.4.6.1              PIMv2   
Graft-Ack

Frame 2 (68 bytes on wire, 68 bytes captured)
Ethernet II, Src: MarvellS_3a:40:8c (00:50:43:3a:40:8c), Dst: 00:00:00_01:01:02
(00:00:00:01:01:02)
Internet Protocol, Src: 10.4.6.2 (10.4.6.2), Dst: 10.4.6.1 (10.4.6.1)
Protocol Independent Multicast
    Version: 2
    Type: Graft-Ack (7)
    Checksum: 0x364a [correct]
    PIM parameters
        Groups: 0


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