diff --git a/roles/network/templates/network/dhcpcd.conf.j2 b/roles/network/templates/network/dhcpcd.conf.j2
index b44eb297d..cebff6e51 100644
--- a/roles/network/templates/network/dhcpcd.conf.j2
+++ b/roles/network/templates/network/dhcpcd.conf.j2
@@ -58,7 +58,11 @@ denyinterfaces {{ iiab_wired_lan_iface }}
 
 {% if dhcpcd_result == "enabled" and iiab_lan_iface != "none" %}
 interface {{ iiab_lan_iface }}
+{% if network_172 %}
 static ip_address={{ lan_ip }}/19
+{% else %}
+static ip_address={{ lan_ip }}/24
+{% endif %}
 static domain_name_servers=127.0.0.1
 {% endif %}
 
diff --git a/roles/network/templates/network/systemd-br0-network.j2 b/roles/network/templates/network/systemd-br0-network.j2
index 619196b8b..07c5a1246 100644
--- a/roles/network/templates/network/systemd-br0-network.j2
+++ b/roles/network/templates/network/systemd-br0-network.j2
@@ -3,7 +3,11 @@
 Name=br0
 
 [Network]
+{% if network_172 %}
 Address={{ lan_ip }}/19
+{% else %}
+Address={{ lan_ip }}/24
+{% endif %}
 LinkLocalAddressing=no
 ConfigureWithoutCarrier=yes
 RequiredForOnline=degraded-carrier