Red Hat Bugzilla – Bug 561103
Guest network routing failure
Last modified: 2010-11-17 14:09:46 EST
Description of problem:
On an F12 box installed from scratch, I'm having severe networking problems with libvirt-managed guests. Both a Windows 7 and a Centos 5.4 guest have no routing - they cannot reach beyond the host, even though they're using the default NAT network. The only rules I added to the default iptables set were for a Samba share on the host.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
I am getting the same trouble on my laptop with default NAT configuration (virbr0)
Laptop with F12 i386 and libvirt-0.7.7-4.fc12.i686 from fedora-rawvirt.repo
1. virsh net-edit default.xml (to add some new IPs for new VM, in my case)
2. virsh net-destroy default.xml
3. virsh net-start default.xml
After this manipulation, the communication between the host and the VMs is unreachable
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Adam, since this bug is pretty old, I'm closing for now, but please reopen if you can reproduce with F13 or later and we can debug further.
Gael (comment #2), sounds like that is a separate issue: I'm not sure if restarting a virtual network while VMs are running is expected to take out host->guest communication, so if you can reproduce against f13 or later please open a separate report.