diff --git a/buildserver/Vagrantfile b/buildserver/Vagrantfile
index 111df705..8d8b2877 100644
--- a/buildserver/Vagrantfile
+++ b/buildserver/Vagrantfile
@@ -34,6 +34,8 @@ Vagrant.configure("2") do |config|
       libvirt.uri = "qemu:///system"
       libvirt.cpus = configfile["cpus"]
       libvirt.memory = configfile["memory"]
+      libvirt.disk_bus = configfile["libvirt_disk_bus"]
+      libvirt.nic_model_type = configfile["libvirt_nic_model_type"]
     end
     config.vm.synced_folder './', '/vagrant', type: '9p'
     synced_folder_type = '9p'
diff --git a/examples/makebuildserver.config.py b/examples/makebuildserver.config.py
index 679732b7..5911c66f 100644
--- a/examples/makebuildserver.config.py
+++ b/examples/makebuildserver.config.py
@@ -63,3 +63,11 @@
 # below:
 #
 # vm_provider = 'libvirt'
+
+# By default libvirt uses 'virtio' for both network and disk drivers.
+# Some systems (eg. nesting VMware ESXi) do not support virtio. As a
+# workaround for such rare cases, this setting allows to configure
+# KVM/libvirt to emulate hardware rather than using virtio.
+#
+# libvirt_disk_bus = 'sata'
+# libvirt_nic_model_type = 'rtl8139'
diff --git a/makebuildserver b/makebuildserver
index 0c25a08f..f43dd489 100755
--- a/makebuildserver
+++ b/makebuildserver
@@ -65,6 +65,8 @@ config = {
     'memory': 2048,
     'hwvirtex': 'off',
     'vm_provider': 'virtualbox',
+    'libvirt_disk_bus': 'virtio',
+    'libvirt_nic_model_type': 'virtio',
 }
 
 if os.path.isfile('/usr/bin/systemd-detect-virt'):