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Description of problem: If I start a qemu guest OS in rawhide it seems the network connection on eth0 is unreachable. I guess the bridge is not working correctly. How reproducible: every time Steps to Reproduce: 1. try to install FC6 via http as a guest OS Actual results: Can't connect to http mirror. Expected results: Network connection to work like under xenbr. Additional info: I configure the qemu guest network to be "Virtual network -> default" since "Shared physical device" shows no devices.
Can you tell me what kernel version is being used in the guest OS ? The most likely reason for the broken connectivity is a kernel bug todo with checksumming. You can verify this theory by doing: In the host: ethtool -K virbr0 tx off And in the guest: ethtool -K eth0 tx off With both those disabled, networking should work. The real fix will be done in the kernel-xen RPM.
(BTW I am running qemu with kernel-2.6.21-1.3116.fc7.x86_64 and kvm.) Yum upgrading to the latest rawhide today pulled in dnsmasq and networking is working now. :)
However I am still not able to do a network install of guests for qemu.
BTW is kernel-xen required for networking with qemu? (I ran "ethtool -K virbr0 tx off" on the host but couldn't run "ethtool -K eth0 tx off" on a rhel5 qemu guest.) > However I am still not able to do a network install of guests for qemu. Actually after rebooting again everything *is* working now. <shrug/>