diff --git a/ansible/group_vars/all/controllers b/ansible/group_vars/all/controllers
index d9400e67a..9091ab08d 100644
--- a/ansible/group_vars/all/controllers
+++ b/ansible/group_vars/all/controllers
@@ -9,6 +9,11 @@ controller_bootstrap_user: "{{ lookup('env', 'USER') }}"
 ###############################################################################
 # Controller network interface configuration.
 
+# List of networks to which controller nodes are attached.
+controller_network_interfaces: >
+  {{ (controller_default_network_interfaces +
+      controller_extra_network_interfaces) | unique | list }}
+
 # List of default networks to which controller nodes are attached.
 controller_default_network_interfaces: >
   {{ [provision_oc_net_name,
diff --git a/ansible/group_vars/all/monitoring b/ansible/group_vars/all/monitoring
index 5a830c0ec..f66c322a6 100644
--- a/ansible/group_vars/all/monitoring
+++ b/ansible/group_vars/all/monitoring
@@ -9,6 +9,13 @@ monitoring_bootstrap_user: "{{ controller_bootstrap_user }}"
 ###############################################################################
 # Monitoring node network interface configuration.
 
+# List of networks to which monitoring nodes are attached.
+monitoring_network_interfaces: >
+  {{ controller_network_interfaces | unique | list
+     if inventory_hostname in groups['controllers'] else
+     (monitoring_default_network_interfaces +
+      monitoring_extra_network_interfaces) | unique | list }}
+
 # List of default networks to which monitoring nodes are attached.
 monitoring_default_network_interfaces: >
   {{ [provision_oc_net_name,
diff --git a/ansible/group_vars/all/seed b/ansible/group_vars/all/seed
index 13d600d37..a738cfa65 100644
--- a/ansible/group_vars/all/seed
+++ b/ansible/group_vars/all/seed
@@ -9,6 +9,11 @@ seed_bootstrap_user: "{{ lookup('env', 'USER') }}"
 ###############################################################################
 # Seed network interface configuration.
 
+# List of networks to which seed nodes are attached.
+seed_network_interfaces: >
+  {{ (seed_default_network_interfaces +
+      seed_extra_network_interfaces) | unique | list }}
+
 # List of default networks to which seed nodes are attached.
 seed_default_network_interfaces: >
   {{ [oob_oc_net_name,
diff --git a/ansible/group_vars/all/seed-hypervisor b/ansible/group_vars/all/seed-hypervisor
index 764d8867c..f46840d08 100644
--- a/ansible/group_vars/all/seed-hypervisor
+++ b/ansible/group_vars/all/seed-hypervisor
@@ -2,6 +2,11 @@
 ###############################################################################
 # Seed hypervisor network interface configuration.
 
+# List of networks to which seed hypervisor nodes are attached.
+seed_hypervisor_network_interfaces: >
+  {{ (seed_hypervisor_default_network_interfaces +
+      seed_hypervisor_extra_network_interfaces) | unique | list }}
+
 # List of default networks to which seed hypervisor nodes are attached.
 seed_hypervisor_default_network_interfaces: "{{ seed_default_network_interfaces }}"
 
diff --git a/ansible/group_vars/controllers/network b/ansible/group_vars/controllers/network
index 3fd920c4f..e48a11636 100644
--- a/ansible/group_vars/controllers/network
+++ b/ansible/group_vars/controllers/network
@@ -3,6 +3,4 @@
 # Network interface attachments.
 
 # List of networks to which these nodes are attached.
-network_interfaces: >
-  {{ (controller_default_network_interfaces +
-      controller_extra_network_interfaces) | unique | list }}
+network_interfaces: "{{ controller_network_interfaces | unique | list }}"
diff --git a/ansible/group_vars/monitoring/network b/ansible/group_vars/monitoring/network
index 6fcde222a..7652ab282 100644
--- a/ansible/group_vars/monitoring/network
+++ b/ansible/group_vars/monitoring/network
@@ -3,9 +3,4 @@
 # Network interface attachments.
 
 # List of networks to which these nodes are attached.
-network_interfaces: >
-  {{ (controller_default_network_interfaces +
-      controller_extra_network_interfaces) | unique | list
-     if inventory_hostname in groups['controllers'] else
-     (monitoring_default_network_interfaces +
-      monitoring_extra_network_interfaces) | unique | list }}
+network_interfaces: "{{ monitoring_network_interfaces | unique | list }}"
diff --git a/ansible/group_vars/seed-hypervisor/network b/ansible/group_vars/seed-hypervisor/network
index 8ab38a57c..17a17b6ba 100644
--- a/ansible/group_vars/seed-hypervisor/network
+++ b/ansible/group_vars/seed-hypervisor/network
@@ -3,6 +3,4 @@
 # Network interface attachments.
 
 # List of networks to which these nodes are attached.
-network_interfaces: >
-  {{ (seed_hypervisor_default_network_interfaces +
-      seed_hypervisor_extra_network_interfaces) | unique | list }}
+network_interfaces: "{{ seed_hypervisor_network_interfaces | unique | list }}"
diff --git a/ansible/group_vars/seed/network b/ansible/group_vars/seed/network
index 37d928760..119ed0ea3 100644
--- a/ansible/group_vars/seed/network
+++ b/ansible/group_vars/seed/network
@@ -3,6 +3,4 @@
 # Network interface attachments.
 
 # List of networks to which these nodes are attached.
-network_interfaces: >
-  {{ (seed_default_network_interfaces +
-      seed_extra_network_interfaces) | unique | list }}
+network_interfaces: "{{ seed_network_interfaces | unique | list }}"
diff --git a/etc/kayobe/controllers.yml b/etc/kayobe/controllers.yml
index e7cc2f646..c6771d085 100644
--- a/etc/kayobe/controllers.yml
+++ b/etc/kayobe/controllers.yml
@@ -9,6 +9,9 @@
 ###############################################################################
 # Network interface attachments.
 
+# List of networks to which controller nodes are attached.
+#controller_network_interfaces:
+
 # List of default networks to which controller nodes are attached.
 #controller_default_network_interfaces:
 
diff --git a/etc/kayobe/monitoring.yml b/etc/kayobe/monitoring.yml
index 0862b649d..300c4a714 100644
--- a/etc/kayobe/monitoring.yml
+++ b/etc/kayobe/monitoring.yml
@@ -9,6 +9,9 @@
 ###############################################################################
 # Monitoring node network interface configuration.
 
+# List of networks to which monitoring nodes are attached.
+#monitoring_network_interfaces:
+
 # List of default networks to which monitoring nodes are attached.
 #monitoring_default_network_interfaces:
 
diff --git a/etc/kayobe/seed-hypervisor.yml b/etc/kayobe/seed-hypervisor.yml
index 49d06a6ef..33c1c530c 100644
--- a/etc/kayobe/seed-hypervisor.yml
+++ b/etc/kayobe/seed-hypervisor.yml
@@ -2,6 +2,9 @@
 ###############################################################################
 # Seed hypervisor network interface configuration.
 
+# List of networks to which seed hypervisor nodes are attached.
+#seed_hypervisor_network_interfaces:
+
 # List of default networks to which seed hypervisor nodes are attached.
 #seed_hypervisor_default_network_interfaces:
 
diff --git a/etc/kayobe/seed.yml b/etc/kayobe/seed.yml
index bd179ce7a..eda888a6d 100644
--- a/etc/kayobe/seed.yml
+++ b/etc/kayobe/seed.yml
@@ -9,6 +9,9 @@
 ###############################################################################
 # Network interface attachments.
 
+# List of networks to which seed nodes are attached.
+#seed_network_interfaces:
+
 # List of default networks to which seed nodes are attached.
 #seed_default_network_interfaces: