No Network Using Qemu-kvm-ev-2.3.0-31.el7.16.1

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Hi all,

To do some tests, I have installed a new CentOS7 host (fully patched) using qemu-kvm-ev-2.3.0-31.el7.16.1 instead of qemu-kvm’s default package. And I have problems with network inside my guests.

All guests can ping to CentOS host but nothing more: can’t resolv dns names, can access via tcp to other hosts, etc … Using same config on other CentOS7 host, but using default qemu-kvm package instead of qemu-kvm-ev-2.3.0-31.el7.16.1, all works ok.

What am I doing wrong? Or is it a bug?


5 thoughts on - No Network Using Qemu-kvm-ev-2.3.0-31.el7.16.1

  • Ok, problem is not with qemu-kvm-ev-2.3.0-31.el7.16.1 package, it is with systemd-networkd. I have installed openvswitch and all works ok. Then, my question, is why is it not possible to use systemd-networkd for configure virtual switches to use them with KVM guests in CentOS 7 (using for other things, they seem work ok)??

    In Ubuntu, Arch and Debian there is no problem with systemd-networkd configured bridges for KVM guests.

    Any idea why ??


  • Martinez, Any more config you have checked for DNS resolution related? You can ping to other host in the network right?


    —–Original Message—

  • Hello, this could be issue with firewall or netfilter on bridge

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  • Nop. Problem was with systemd-networkd. Using openvswitch of ifcfg-XXX config files, all works ok without problems.

    Greetings, C. L. Martinez