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> Date: Thu, 22 Mar 2012 15:11:44 -0400 > From: laine@xxxxxxxxx > To: libvir-list@xxxxxxxxxx > Subject: Re: [libvirt] Problem with Open vSwitch and dnsmasq > > On 03/22/2012 09:10 AM, Daniele Milani wrote: > > Dear all, > > I have the following situation: > > -I replaced the standard bridge driver with the Open VSwitch one; > > I'm curious what you mean by this. > > libvirt's virtual networks currently only support the standard linux > bridge device. There is no code in libvirt to use openvswitch devices > for libvirt's virtual networks. The openvswitch support in libvirt only > applies to guest devices that use <interface type='bridge'>. > > >From your message, it sounds like there is a driver that that replaces > the linux host bridge driver with something that emulates that driver, > but is actually an openvswitch bridge on the backend. I hadn't > previously heard of this. > I did it by installing Open vSwitch with kernel modules: % ./configure --with-linux=/lib/modules/`uname -r`/build
after that I replaced the standard linux bridge driver by executing:
% rmmod bridge% insmod datapath/linux/brcompat.ko% ovs-brcompatd --pidfile --detach you can find all this information at: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;f=INSTALL.Linux;hb=HEAD http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;f=INSTALL.bridge;hb=HEAD Daniele Milani > > > -I started a NAT-network on Libvirt (bridge name virbr1); > > -I started a Virtual Machine (VM1) on Libvirt, and I tagged his > > interface (vnet0) with tag=2; > > -if I run "# ovs-vsctl show" I obtain: > > > > Bridge "virbr1" > > Port "vnet0" > > tag: 2 > > Interface "vnet0" > > Port "virbr1-nic" > > Interface "virb1-nic" > > Port "virbr1" > > Interface "virbr1" > > type: internal > > > > -the problem is that it is impossible to assign to VM1 an IP, because > > the dnsmasq daemon does not accept the tagged DHCP Discover frame. > > > > Does someone know if there is a way for dnsmasq to accept tagged > > frames through "virbr1", and send a tagged DHCP Offer packet back to VM1? > > > -- > libvir-list mailing list > libvir-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvir-list |
