<div dir="auto"><div>Some ixgbe NICs of Intel require recompilation of driver if packet forwarding is being used. <div dir="auto"><br></div><div dir="auto">There is a flag that needs to be put to false in the arguments to avoid issues like the one you describe. </div><div dir="auto"><br></div><div dir="auto">If this is your case Please go to the Readme file of your driver source code and scroll down to the part of LZO flag warning and packet forwarding for more information. </div><br><div class="gmail_extra"><br><div class="gmail_quote">On Jan 13, 2017 4:46 PM, "Ben Pfaff" <<a href="mailto:blp@ovn.org">blp@ovn.org</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">That does seem likely to me, but if you discover any evidence that<br>
points to OVS, please do come back and talk to us again.<br>
<div class="elided-text"><br>
On Thu, Jan 12, 2017 at 10:40:07AM +0000, Matias Vara wrote:<br>
> Thank you Ben, so the problem could in the driver or in the kernel.<br>
><br>
> 2017-01-11 17:37 GMT+00:00 Ben Pfaff <<a href="mailto:blp@ovn.org">blp@ovn.org</a>>:<br>
><br>
> > On Wed, Jan 11, 2017 at 01:15:10PM +0000, Matias Vara wrote:<br>
> > > Hi everyone and sorry for the multiple emails, we are facing a flopping<br>
> > of<br>
> > > igb (5.3.4.4) nics which are bonded by using openvswitch. I am in<br>
> > XenServer<br>
> > > which is based on CentOS. I am not sure if the problem is the driver or<br>
> > > openvswitch. We have six nics that are bonded into two groups of three.<br>
> > The<br>
> > > issue appers after some time that the nics are bonded. The *kern.log*<br>
> > shows<br>
> > > (part of):<br>
> ><br>
> > OVS just sends and receives packets on interfaces. It's hard to imagine<br>
> > how it would cause a link to flap at the driver level.<br>
> ><br>
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