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    Neutron implements Security Groups by applying iptable rules on
    Linux bridge. So, we need these parameters to be set.<br>
    Please see [1] for details.<br>
    [1] - <a class="moz-txt-link-freetext" href="https://bugs.launchpad.net/openstack-manuals/+bug/1359691">https://bugs.launchpad.net/openstack-manuals/+bug/1359691</a><br>
    <br>
    On 08/13/2015 01:50 PM, FASEELA.ASHRAF wrote:<br>
    <blockquote
cite="mid:CAMLVToJ10qSFh_vvdSN9LqjPMwdu9gfd_gDZNuq8nTOXas16YA@mail.gmail.com"
      type="cite">
      <div dir="ltr">I installed the package bridge-utils and the error
        remains the same. In other versions of Openstack like Juno and
        kilo these lines:<br>
         <br>
        <div>
          <div class="gmail_extra">net.bridge.bridge-nf-call-arptables=1<br>
            net.bridge.bridge-nf-call-iptables=1<br>
             net.bridge.bridge-nf-call-ip6tables=1<br>
            <br>
          </div>
          <div class="gmail_extra">are not used in the sysctl file. So
            are they mandatory ?<br>
            <br>
            <br>
            <br>
          </div>
          <div class="gmail_extra">
            <div class="gmail_quote">On Thu, Aug 13, 2015 at 1:21 PM,
              Andreas Scheuring <span dir="ltr"><<a
                  moz-do-not-send="true"
                  href="mailto:scheuran@linux.vnet.ibm.com"
                  target="_blank">scheuran@linux.vnet.ibm.com</a>></span>
              wrote:<br>
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex">Can
                you try the package bridge-utils?<br>
                <div>
                  <div class="h5"><br>
                    On Do, 2015-08-13 at 11:15 +0530, FASEELA.ASHRAF
                    wrote:<br>
                    > Hi ,<br>
                    ><br>
                    > I am trying to install a 3 node architecture of
                    Openstack icehouse<br>
                    > version on my Ubuntu 14.04LTS . I would like to
                    know if it is<br>
                    > necessary to add the following lines to
                    sysctl.conf in network node.<br>
                    > net.bridge.bridge-nf-call-arptables=1<br>
                    > net.bridge.bridge-nf-call-iptables=1<br>
                    > net.bridge.bridge-nf-call-ip6tables=1<br>
                    ><br>
                    > When running the command sysctl -p following
                    errors are shown :<br>
                    > sysctl: cannot stat
                    /proc/sys/net/bridge/bridge-nf-call-arptables: No
                    such file or directory<br>
                    > sysctl: cannot stat
                    /proc/sys/net/bridge/bridge-nf-call-iptables: No
                    such file or directory<br>
                    > sysctl: cannot stat
                    /proc/sys/net/bridge/bridge-nf-call-ip6tables: No
                    such file or directory<br>
                    ><br>
                    > Am I missing some package in my system?<br>
                    ><br>
                    ><br>
                    ><br>
                  </div>
                </div>
                > _______________________________________________<br>
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                <span class="HOEnZb"><font color="#888888"><br>
                    --<br>
                    Andreas<br>
                    (IRC: scheuran)<br>
                    <br>
                    <br>
                  </font></span></blockquote>
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