Good morning, list, I've been trying to get my KVM virtual machines to connect to the Interwebs for the last 3 hours with no success. I'm running Debian Wheezy (fully patched) and building virtual machines using KVM in Virt Manager. With the default, factory settings shown in virt manager, I have a default virtual network with the device name virbr0, which starts on boot and uses the default IPv4 subnets. I also have the default lo (loopback) network interface. I have tried creating a Windows 8 Release Preview machine and a Kubuntu Live CD machine. Despite recognising the hardware and network interface, neither machine will connect to the Internet. From what I can see in both virtual machines, it seems that neither is getting a DHCP lease from virbr0. I'm not sure what's broken or where to start looking for trouble because both the logs and the documentation are fairly sparse.

Thank you for the tips. There was nothing of interest in the libvirt logs and dnsmasq seems to be installed correctly, but perhaps this configuration information will help: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=spice /usr/bin/kvm -S -M pc-0.15 -cpu core2duo,+lahf_lm,+osxsave,+xsave,+sse4.1,+pdcm,+xtpr,+cx16,+tm2,+est,+vmx,+ds_cpl,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -name KubuntuLiveCD -uuid bfe78349-5409-d439-3ba5-545ada8727bc -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/BootDiskTest.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/home/borden/kubuntu-12.04-desktop-i386.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=20,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:e3:80:11,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5900,addr=127.0.0.1,disable-ticketing -vga qxl -global qxl-vga.vram_size=67108864 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 It turns out when I was poking through dmesg that I discovered that Firestarter was, indeed, blocking the virtual machines from getting an IP address. Which ports/services do I have to open in the firewall to let DHCP do its work? I can't find anything in the documentation which says that firewalls can cause problems. Perhaps someone should mention that? The problem isn't quite solved yet. Although the virtual machines can an IP address, they cannot connect to the Internet. The connections time out when I try to connect out. Suggestions? With thanks, Borden _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users

On 28 July 2012 01:23, vipul borikar <vipulcell(a)gmail.com&gt; wrote: > Can you just disable the firewall and see whether it works or not . I did that. The virtual machine can get an IP address now but can't connect to the Internet. The VMs can, however, connect to the Apache server I run on my laptop (the host) if I direct a browser to the VM's gateway (192.168.122.1). However, it's not a DNS issue because I also cannot connect to, say, Google using its IP address.