diff --git a/.github/workflows/stackhpc-all-in-one.yml b/.github/workflows/stackhpc-all-in-one.yml
index 5d9d4f125..84442121a 100644
--- a/.github/workflows/stackhpc-all-in-one.yml
+++ b/.github/workflows/stackhpc-all-in-one.yml
@@ -214,22 +214,12 @@ jobs:
       - name: Write Terraform network config
         run: |
           cat << EOF > etc/kayobe/environments/$KAYOBE_ENVIRONMENT/tf-networks.yml
-
-          admin_oc_net_name: admin
-          admin_cidr: "{{ access_cidr.value }}"
-          admin_allocation_pool_start: 0.0.0.0
-          admin_allocation_pool_end: 0.0.0.0
-          admin_gateway: "{{ access_gw.value }}"
-          admin_bootproto: dhcp
-          admin_ips:
+          admin_oc_net_name: ethernet
+          ethernet_cidr: "{{ access_cidr.value }}"
+          ethernet_allocation_pool_start: 0.0.0.0
+          ethernet_allocation_pool_end: 0.0.0.0
+          ethernet_ips:
             controller0: "{{ access_ip_v4.value }}"
-          admin_zone: admin
-          EOF
-
-      - name: Write Terraform network interface config
-        run: |
-          cat << EOF > etc/kayobe/environments/$KAYOBE_ENVIRONMENT/inventory/group_vars/controllers/tf-network-interfaces
-          admin_interface: "{{ access_interface.value }}"
           EOF
 
       - name: Write all-in-one scenario config
diff --git a/etc/kayobe/environments/ci-aio/automated-setup.sh b/etc/kayobe/environments/ci-aio/automated-setup.sh
index 441c8f967..868d408ca 100644
--- a/etc/kayobe/environments/ci-aio/automated-setup.sh
+++ b/etc/kayobe/environments/ci-aio/automated-setup.sh
@@ -76,10 +76,6 @@ fi
 sudo ip l set dummy1 up
 sudo ip l set dummy1 master breth1
 
-if type apt; then
-    sudo cp /run/systemd/network/* /etc/systemd/network
-fi
-
 export KAYOBE_VAULT_PASSWORD=$(cat $BASE_PATH/vault-pw)
 pushd $BASE_PATH/src/kayobe-config
 source kayobe-env --environment ci-aio
diff --git a/etc/kayobe/environments/ci-aio/controllers.yml b/etc/kayobe/environments/ci-aio/controllers.yml
index 8972187df..12fe3afcb 100644
--- a/etc/kayobe/environments/ci-aio/controllers.yml
+++ b/etc/kayobe/environments/ci-aio/controllers.yml
@@ -6,6 +6,9 @@
 # to setup the Kayobe user account. Default is {{ os_distribution }}.
 controller_bootstrap_user: "{{ os_distribution if os_distribution == 'ubuntu' else 'cloud-user' }}"
 
+controller_extra_network_interfaces:
+  - ethernet
+
 # Controller lvm configuration. See intentory/group_vars/controllers/lvm.yml
 # for the exact configuration.
 controller_lvm_groups:
diff --git a/etc/kayobe/environments/ci-aio/inventory/group_vars/controllers/network-interfaces b/etc/kayobe/environments/ci-aio/inventory/group_vars/controllers/network-interfaces
index 2f8d30103..85f318f42 100644
--- a/etc/kayobe/environments/ci-aio/inventory/group_vars/controllers/network-interfaces
+++ b/etc/kayobe/environments/ci-aio/inventory/group_vars/controllers/network-interfaces
@@ -2,6 +2,11 @@
 ###############################################################################
 # Network interface definitions for the controller group.
 
+# Ethernet interface is the `primary` or `physical` interface associated
+# with the instance that the AIO deployment runs inside of. It is the interface used
+# to reach the instance.
+ethernet_interface: "{{ ansible_facts['default_ipv4']['interface'] }}"
+
 # Controller interface on all-in-one network.
 aio_interface: breth1
 # Use dummy1 if it exists, otherwise the bridge will have no ports.
diff --git a/etc/kayobe/environments/ci-aio/networks.yml b/etc/kayobe/environments/ci-aio/networks.yml
index e3cc4d43d..4bf4e96cd 100644
--- a/etc/kayobe/environments/ci-aio/networks.yml
+++ b/etc/kayobe/environments/ci-aio/networks.yml
@@ -80,6 +80,12 @@ cleaning_net_name: aio
 ###############################################################################
 # Network definitions.
 
+# This network is required to be defined within `ci-aio` environment to ensure that
+# the network interface files are created appropriately and to provide easy inclusion
+# within the firewall configuration.
+ethernet_bootproto: dhcp
+ethernet_zone: trusted
+
 # All-in-one network.
 aio_cidr: 192.168.33.0/24
 aio_allocation_pool_start: 192.168.33.3