netfilter buglog - Mar 2003 - [Bug 59] New: sparc64 conntrack issue with expecting related connections, FTP

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=59

           Summary: sparc64 conntrack issue with expecting related
                    connections, FTP
           Product: netfilter/iptables
           Version: linux-2.4.x
          Platform: sparc64
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: connection tracking
        AssignedTo: laforge@netfilter.org
        ReportedBy: laforge@netfilter.org
                CC: netfilter-buglog@lists.netfilter.org


From: "Chris Poon" <Chris.Poon@TELUS.COM> 

After running a kernel with debugging on ip_conntrack_core.c, I can see that it 
doesn't find a match in the expected connections list, but the print out
suggests that the expectation for the related connection is set correctly. That
points me to two scenarios: 

1) the related connection entry was not found in the expectation               
                                                    list due to a failed masked
comparison or 
2) the related connection entry was found and further operations in
ip_conntrack_core.c:init_conntrack invalidated the expectation. 

Again, I feel that this might be strictly a 64 bit kernel issue as I'm
                                                               
sure if the conntrack for related connection didn't work for 32 bit kernels,
I
would have found a lot more discussion about it (which I found none so far). And
I don't
 think this is strictly with FTP connection tracking either, but rather
connection tracking for related connection in general under a 64 bit kernel.



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