diff --git a/inventory/host_vars/openqa-p09-worker01.iad2.fedoraproject.org b/inventory/host_vars/openqa-p09-worker01.iad2.fedoraproject.org
index 39d7772bb1..220cf2ac72 100644
--- a/inventory/host_vars/openqa-p09-worker01.iad2.fedoraproject.org
+++ b/inventory/host_vars/openqa-p09-worker01.iad2.fedoraproject.org
@@ -6,6 +6,7 @@ dns_search1: "iad2.fedoraproject.org"
 dns_search2: "fedoraproject.org"
 enp1s0f0_ipv4: 10.3.174.42
 enp1s0f0_ipv4_gw: 10.3.174.254
+enp1s0f0_ipv4_nm: 24
 enp1s0f0_mac: "{{ mac1 }}"
 enp1s0f1_mac: "{{ mac2 }}"
 freezes: false
diff --git a/inventory/host_vars/openqa-p09-worker02.iad2.fedoraproject.org b/inventory/host_vars/openqa-p09-worker02.iad2.fedoraproject.org
index 785122c26c..531808fb6c 100644
--- a/inventory/host_vars/openqa-p09-worker02.iad2.fedoraproject.org
+++ b/inventory/host_vars/openqa-p09-worker02.iad2.fedoraproject.org
@@ -6,6 +6,7 @@ dns_search1: "iad2.fedoraproject.org"
 dns_search2: "fedoraproject.org"
 eth0_ipv4: 10.3.174.43
 eth0_ipv4_gw: 10.3.174.254
+eth0_ipv4_nm: 24
 eth0_mac: "{{ mac1 }}"
 eth1_mac: "{{ mac2 }}"
 eth2_mac: "{{ mac3 }}"