[Ns-bugs] [Bug 85] New: NetDevice::m_ifIndex not the same as Ipv4's ifIndex

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=85

           Summary: NetDevice::m_ifIndex not the same as Ipv4's ifIndex
           Product: ns-3
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P5
         Component: node module
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: tomh at tomh.org


This is a reminder that we ought to consider an alternative to using ifIndex
both in the NetDevice and in the API for Ipv4.  These two indices are not the
same; namely, the Ipv4 ifIndex (the underlying variable is
Ipv4L3Protocol::m_nInterfaces) is often one greater than the NetDevice ifIndex
due to the Ipv4 loopback interface not having a corresponding NetDevice.

At least we should consider changing one of these names because otherwise some
subtle programming errors are likely.


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