diff --git a/inventory/group_vars/sign_bridge b/inventory/group_vars/sign_bridge
index 415611410b..ab1d2429a0 100644
--- a/inventory/group_vars/sign_bridge
+++ b/inventory/group_vars/sign_bridge
@@ -1,5 +1,6 @@
 ---
 freezes: true
+datacenter: iad2
 ipa_client_shell_groups:
   - sysadmin-releng
 ipa_client_sudo_groups:
diff --git a/inventory/host_vars/autosign02.iad2.fedoraproject.org b/inventory/host_vars/autosign02.iad2.fedoraproject.org
index bafb339015..a8bc7e358c 100644
--- a/inventory/host_vars/autosign02.iad2.fedoraproject.org
+++ b/inventory/host_vars/autosign02.iad2.fedoraproject.org
@@ -31,3 +31,4 @@ network_connections:
     name: eth1
     state: up
     type: ethernet
+    mtu: 9000
diff --git a/inventory/host_vars/sign-vault02.iad2.fedoraproject.org b/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
index cbd43666a4..585bf274f9 100644
--- a/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
+++ b/inventory/host_vars/sign-vault02.iad2.fedoraproject.org
@@ -28,4 +28,5 @@ network_connections:
     name: eth1
     state: up
     type: ethernet
+    mtu: 9000
 resolvconf: "resolv.conf/iad2"