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?