[interfaces] Use ipaddr to get network and netmask

plays/network-interfaces.yml

@@ -1,6 +1,6 @@
 #!/usr/bin/env ansible-playbook
 ---
-- hosts: voyager.adm.crans.org
+- hosts: voyager.adm.crans.org,boeing.adm.crans.org
   vars:
     vlan:
       - name: srv

roles/interfaces/templates/network/interfaces.d/ifalias.j2

@@ -1,7 +1,8 @@
 {{ ansible_header | comment }}
 
 {% set vlan_name = (item.name | replace('_', '-')) %}
-{% set subnet = query('ldap', 'network', vlan_name) %}
+{% set subnet_network = (query('ldap', 'network', vlan_name) | ipaddr('network')) %}
+{% set subnet_netmask = (query('ldap', 'network', vlan_name) | ipaddr('netmask')) %}
 {% set ips = query('ldap', 'ip', ansible_hostname, vlan_name) %}
 {% if (ips | ipv4 | length) > 0 %}
 auto {{ interfaces[item.name] }}
@@ -9,8 +10,8 @@ iface {{ interfaces[item.name] }} inet static
 {% for ip in (ips | ipv4) %}
 	address {{ ip }}
 {% endfor %}
-	network {{ subnet.network }}
-	netmask {{ subnet.netmask }}
+	network {{ subnet_network }}
+	netmask {{ subnet_netmask }}
 {% if item.gateway is defined %}
 	gateway {{ item.gateway }}
 {% endif %}