[Bug 33] New: Connection tracking code doesn't track the interface of the connection

[bugzilla-daemon@netfilter.org]

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=33

           Summary: Connection tracking code doesn't track the interface of
                    the connection
           Product: netfilter/iptables
           Version: linux-2.4.x
          Platform: i386
        OS/Version: Mandrake Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: connection tracking
        AssignedTo: laforge@netfilter.org
        ReportedBy: joseg69@bellsouth.net
                CC: netfilter-buglog@lists.netfilter.org


Two internet interfaces, the interfaces are equalized using iproute2.  The box
is also performing DNAT and SNAT.  What occurs is sometimes is that remote users
are unable to access the DNAT resource.  I troubleshoot to the packets going out
the wrong interface using tcpdump.  If I add a static route for the remote host
or I disable one of the internet lines (no equalize) then everything works ok again.

My understanding of the problem is that the connection tracking code doesn't
track the interface of the connection, so the wrong interface is chosen before
un-DNAT'ing and POST-routing time.



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