diff --git a/inventory/host_vars/openqa-x86-worker04.iad2.fedoraproject.org b/inventory/host_vars/openqa-x86-worker04.iad2.fedoraproject.org
index f3a4229736..55655b0639 100644
--- a/inventory/host_vars/openqa-x86-worker04.iad2.fedoraproject.org
+++ b/inventory/host_vars/openqa-x86-worker04.iad2.fedoraproject.org
@@ -11,6 +11,7 @@ ansible_ifcfg_infra_net_devices: [ 'em1' ]
 eno1_ip: 10.3.174.24
 eno1_nm: 255.255.255.0
 gw: 10.3.174.254
+nm: 255.255.255.0
 
 # openQA tap worker hosts (like this one) do stuff with ifcfg that base
 # doesn't understand. terrible, terrible stuff. seriously - it doesn't