Re: [libvirt-users] RX dropped packets on guests subnets

2016-01-26 Thread pichon
Arvin, Thanks a lot for pointing tcpdump. What I have observe is that the packets which seems to be dropped are STP related [root@network ~]# tcpdump -i eth0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 26

Re: [libvirt-users] RX dropped packets on guests subnets

2016-01-26 Thread pichon
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 2

Re: [libvirt-users] RX dropped packets on guests subnets

2016-01-26 Thread pichon
Hello, For me it makes sense that the dropped stop when you are using tcpdump as you are indeed takes those packets ! For me the main question, is why such traffic is going to the VM ? Kind regards Patrick > On 26 Jan 2016, at 20:51, Troels Arvin wrote: > > pichon wrote: > > Hello, > > pich

Re: [libvirt-users] RX dropped packets on guests subnets

2016-01-26 Thread Troels Arvin
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 virtu

Re: [libvirt-users] RX dropped packets on guests subnets

2016-01-25 Thread pichon
Last, if in the VM I add “driver name = ‘emu’, after boot I have few dropped packets, but then it doesn’t increase anymore ! > > > > > > > function='0x0'/> > > On 23 Jan 2016, at 10:58, pichon wrote: > > Hello, > > I have first a question (and then m

[libvirt-users] RX dropped packets on guests subnets

2016-01-25 Thread pichon
Hello, I have first a question (and then may be a problem), that I have difficulties to understand and eventually to investigate. On each of my guests VM, I see constantly a RX dropped number increasing , Even if the VM does nothing ! ifconfig eth0: flags=4163 mtu 1500 inet 192.168.10