diff --git a/.yamllint.yml b/.yamllint.yml
index 3a7ea3d..c8666c8 100644
--- a/.yamllint.yml
+++ b/.yamllint.yml
@@ -5,4 +5,7 @@ rules:
   line-length:
     max: 120
     level: warning
+  document-start:
+    ignore: |
+      /groups_var/all/vault.yml
 ...
diff --git a/group_vars/rives/main.yml b/group_vars/rives/main.yml
index 034b19c..a587f6a 100644
--- a/group_vars/rives/main.yml
+++ b/group_vars/rives/main.yml
@@ -1,6 +1,6 @@
 ---
 apartment_block: rives
-apartment_block_id: 3 
+apartment_block_id: 3
 
 router_ip_suffix: 254
 
diff --git a/host_vars/proxy-ovh.adm.auro.re.yml b/host_vars/proxy-ovh.adm.auro.re.yml
index 3b427e8..3939e6e 100644
--- a/host_vars/proxy-ovh.adm.auro.re.yml
+++ b/host_vars/proxy-ovh.adm.auro.re.yml
@@ -2,7 +2,6 @@
 certbot:
   domains:
     - auro.re
-    - cas.auro.re
     - codimd.auro.re
     - grafana.auro.re
     - pad.auro.re
@@ -14,6 +13,7 @@ certbot:
     - status.auro.re
     - wiki.auro.re
     - www.auro.re
+    - zero.auro.re
   mail: tech.aurore@lists.crans.org
   certname: auro.re
 
@@ -56,6 +56,8 @@ nginx:
       to: "10.128.0.150:8082"
     - from: privatebin.auro.re
       to: "10.128.0.150:8083"
+    - from: zero.auro.re
+      to: "10.128.0.150:8083"
     - from: pad.auro.re
       to: "10.128.0.150:8084"
     - from: cas.auro.re
diff --git a/roles/isc_dhcp_server/tasks/main.yml b/roles/isc_dhcp_server/tasks/main.yml
index e198163..b40b2b8 100644
--- a/roles/isc_dhcp_server/tasks/main.yml
+++ b/roles/isc_dhcp_server/tasks/main.yml
@@ -17,7 +17,7 @@
     state: directory
     owner: re2o-services
     group: nogroup
-    recurse: yes
+    recurse: true
 
 - name: Install isc-dhcp-server
   apt: