On Mon, 23 Sep 2013, Schut, Koos J J (Koos) wrote: > I upgraded from CentOS 5.9 to CentOS 6.4. > > I try to reuse my virtual machines and am only partially successful: I can run them, I just cannot get the network OK and need > some help with that. > > > > What I had in the past was pretty simple: both the host and the VM’s used eth0 and each had an IP in the same subnet and could > communicate freely. With the new install it seems somewhat more complex and I think I need to configure a bridge and use that. > Unfortunately, info I find through google is overwhelming and confusing. All examples either configure something else, or the > outcome is not what expected. > > > > So: how to go about setting things up to have say: > > My physical machine is on 192.168.0.90 > > My Virtual machines are on 192.168.0.100 and 101. > > These are to be fixed addresses. > > The 2 VM’s have to communicate with each other and with the physical machine. > > The VM’s do not necessarily need to communicate with the rest of the world. > > The physical machine needs to communicate with the rest of the world. > > > > I use: > > - CentOS-6.4_64 > > - Virtual Machine Manager 0.9.0 > > - xen 4.2.3 > > - libvirt 0.10.2.7-5 > > - VM’s show Hypervisor = xen (fullvirt) > > - Emulator = qemu-dm > > - NIC points to Shared device name virbr0 > > - on the host, virbr0 has IQ 192.168.122.1 > > > > I have been fighting this for 2 weeks, now. I tried to follow several advises which resulted in either the VM’s not connecting > to anything, or my host losing its connection to the rest of the world, or both. So either I still do something not-right, or I > follow the wrong gidelines. > > > > Can someone give me a push in the right direction, please? Did you try to follow: http://wiki.xen.org/wiki/Host_Configuration/Networking ?