Hello, I’m using the Fedora 23 disturb, with recent kernel on all of my systems ( VMs and Physicals), I see the rx packet dropped only on VMs when I disable the virtio-net driver , by adding driver name=‘emu’ in the XML. But indeed if I started the tcpdump, the dropped stopped. Patrick > On 26 Jan 2016, at 20:51, Troels Arvin <troels@xxxxxxxx> wrote: > > pichon wrote: > > Hello, > > pichon wrote: >> On each of my guests VM, I see constantly a RX dropped number increasing >> , Even if the VM does nothing ! > > I'm seeing the same phenomenon on one of our LANs (on another LAN, I > don't see it). My setup is with RHEL 7, and it is seen on both physical > and virtual servers. I don't see it on any RHEL 5 or 6 servers. > > A strange observation: If I start tcpdump, the package drops stop. > (Setting the NIC in promisc mode does not have any impact; it has to be > tcpdump.) > > I suspect that it has to do with this: > https://www.netiq.com/support/kb/doc.php?id=7007165 > If this is the case, it's simply because recent kernels classify packets, > and then there's nothing to worry about. > > - But Red Hat Support does not share that view. I have an open case with > Red Hat Support about it; lots of stuff has been tried, but we have yet > to reach a conclusion. > > -- > Troels > > > _______________________________________________ > libvirt-users mailing list > libvirt-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvirt-users > _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
