[Bug 764] New: Doing -Z twice in parallel breaks counters

bugzilla-daemon at bugzilla.netfilter.org bugzilla-daemon at bugzilla.netfilter.org
Wed Dec 7 13:27:59 CET 2011


           Summary: Doing -Z twice in parallel breaks counters
           Product: iptables
           Version: 1.3.5
          Platform: x86_64
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: iptables
        AssignedTo: netfilter-buglog at lists.netfilter.org
        ReportedBy: j.rosenboom at syseleven.de
   Estimated Hours: 0.0

This was detected when our accounting script was entered twice in the crontab
by accident, but seems to be easily reproducible by just calling

iptables -L FORWARD -Z & iptables -L FORWARD -Z

Afterwards all counters are not zero but 2^64-original value.

Issue appears with v1.3.5 and recent Centos5.6 kernel as well as v1.4.11.1 and
kernel v3.0.3, so it might even be some kind of intentional behaviour, but IMHO
a fix would be nice.

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