Wireshark-bugs: [Wireshark-bugs] [Bug 1658] New: OSPF LSA with DNA bit set displays wrong age
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 22 Jun 2007 22:19:28 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1658

           Summary: OSPF LSA with DNA bit set displays wrong age
           Product: Wireshark
           Version: 0.99.5
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Minor
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: oliver_meuter@xxxxxx


Build Information:
wireshark 0.99.5 (SVN Rev 20677)

Copyright 1998-2007 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+ 2.10.7, with GLib 2.12.7, with WinPcap (version unknown),
with libz 1.2.3, with libpcre 6.4, with Net-SNMP 5.4, with ADNS, with Lua 5.1,
with GnuTLS 1.6.1, with Gcrypt 1.2.3, with MIT Kerberos, with PortAudio
PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0
(packet.dll version 4.0.0.755), based on libpcap version 0.9.5, without
AirPcap.


Built using Microsoft Visual C++ 6.0 build 8804
--
If an OSPF LSA have the DNA (Do not age) bit set, the age will be displayed
wrong. Instead of masking out the MSB (DNA bit) the age will be handled as a 16
bit unsigned integer. In the attached LSA the age line might look as:

 LS Age: 7 seconds (DNA)
instead of
 LS Age: 32775 seconds

        LS Type: AS-External-LSA (ASBR)
            LS Age: 32775 seconds
            Options: 0x22 (DC, E)
                0... .... = DN: DN-bit is NOT set
                .0.. .... = O: O-bit is NOT set
                ..1. .... = DC: Demand Circuits are supported
                ...0 .... = L: The packet does NOT contain LLS data block
                .... 0... = NP: Nssa is NOT supported
                .... .0.. = MC: NOT multicast capable
                .... ..1. = E: ExternalRoutingCapability
            Link-State Advertisement Type: AS-External-LSA (ASBR) (5)
            Link State ID: 10.205.213.128
            Advertising Router: 10.205.191.233 (10.205.191.233)
            LS Sequence Number: 0x80000002
            LS Checksum: ee68
            Length: 36
            Netmask: 255.255.255.128
            External Type: Type 1 (metric is specified in the same units as
interface cost)
            Metric: 20
            Forwarding Address: 0.0.0.0
            External Route Tag: 0


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