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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am using OVS-2.6.1.<o:p></o:p></p>
<p class="MsoNormal">I setup userspace GRE tunnel, but I have noticed it only supports Transparent Ethernet Bridging(TEB) mode by default, where as other 3<sup>rd</sup> party routers (like cisco, vyatta etc even in linux)support IP mode for tunneled pkt.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Issue is if I try to establish GRE tunnel between one end OVS(userspace) and other end Linux I see ovs dropping the GRE tunnel packets.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">netdev_gre_pop_header()<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">parse_gre_header()<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">{<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">. . .
<o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> if (<span style="background:yellow;mso-highlight:yellow">greh->protocol != htons(ETH_TYPE_TEB</span>)) {<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.75in;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> return -EINVAL;<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.75in;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> }<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">. . .<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt">
<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">}<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can someone please help me to understand why this limitation in OVS. Can OVS able to work with IP based gre tunneled packets too, or there will be some issue.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Soumyadeep<o:p></o:p></p>
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