diff --git a/templates/file-server/routers.json.j2 b/templates/file-server/routers.json.j2
index 764ee37..14831c8 100644
--- a/templates/file-server/routers.json.j2
+++ b/templates/file-server/routers.json.j2
@@ -3,12 +3,12 @@
     {{ name | tojson }}: {{{
         'shortname': name,
         'name': data['site_name'],
-        'ip_addresses': [data['host_ip']],
+        'ip_addresses': ([data['host_ip']] if 'host_ip' in data else []) + ([data['host_ipv6']] if 'host_ipv6' in data else []),
         'prefix': data['default_prefix'],
 
         'host': data['ansible_host'],
-        'site': 'http://' + data['ansible_host'] + ':80/',
-        'https': 'https://' + data['ansible_host'] + ':443/',
+        'site': 'http://' ~ data['ansible_host'] ~ ':80/',
+        'https': 'https://' ~ data['ansible_host'] ~ ':443/',
 
         'neighbors': list(data['neighbors'].keys()),
         'position': data['position'],