diff --git a/roles/openqa/worker/files/ifcfg-br0 b/roles/openqa/worker/files/ifcfg-br0
index 5e8ca9aa02..1d068e5711 100644
--- a/roles/openqa/worker/files/ifcfg-br0
+++ b/roles/openqa/worker/files/ifcfg-br0
@@ -4,7 +4,7 @@ BOOTPROTO='static'
 IPADDR='10.0.2.2'
 NETMASK='255.254.0.0'
 DEVICE=br0
-STP=off
+STP=on
 ONBOOT='yes'
 NAME='br0'
 HOTPLUG='no'