diff --git a/inventory/host_vars/sign-vault02.iad2.fedoraproject.org b/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
index bf1c533021..28cb1c0144 100644
--- a/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
+++ b/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
@@ -6,6 +6,7 @@ dns_search1: "iad2.fedoraproject.org"
 dns_search2: "fedoraproject.org"
 eth1_ipv4_ip: 10.3.169.27
 eth1_ipv4_gw: 10.3.169.254
+eth1_ipv4_nm: 255.255.255.0
 eth1_mac: "{{ mac0 }}"
 has_ipv4: yes
 mac0: B4:45:06:FB:8B:3E