On 02/01/2013 08:26 AM, Filip Korzeniowski wrote: > Dear list, > > I am getting strange problems using a setup outlined in the subject. I > want to run three guests on a single kvm host. The guests are connected > through macvtap directly to the network device 'eth0' of the host using > this configuration: > > <interface type='direct'> > <mac address='52:54:00:86:3f:24'/> > <source dev='eth0' mode='bridge'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> > </interface> > > Each guest is assigned a static ip address, no DHCP is involved. > > When I start the guests the macvtap links are generated automatically, > ifconfig outputs this: > > macvtap2 Link encap:Ethernet HWaddr 52:54:00:86:3f:24 > inet6 addr: fe80::5054:ff:fe86:3f24/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:98 errors:0 dropped:0 overruns:0 frame:0 > TX packets:31 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:500 > RX bytes:10946 (10.6 KiB) TX bytes:2184 (2.1 KiB) > > However, depending on the startup order, only the first two guests are > able to reach the network! I can't access the third one. After the > initial startup, the last host won't connect to the network even if I restart > all the guests in a differnt order. I can only reset this by restarting > the host. Assuming that each guest's interface definition has a unique MAC address, this really sounds like a bug in macvtap on your kernel. There is probably some limit on the number of macvtap interfaces attached to a single physical interface, but it's certainly much higher than 3, and if you hit it you'd be more likely to get an error when attempting to create the macvtap device. _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
