diff --git a/data/subnets/sesi_rocquencourt_admin.yaml b/data/subnets/sesi_rocquencourt_admin.yaml
--- a/data/subnets/sesi_rocquencourt_admin.yaml
+++ b/data/subnets/sesi_rocquencourt_admin.yaml
@@ -14,10 +14,6 @@
   - 193.51.196.131
 dns::forwarder_insecure: true
 
-ntp::servers:
-  - sesi-ntp1.inria.fr
-  - sesi-ntp2.inria.fr
-
 internal_network: 192.168.50.0/24
 
 smtp::relay_hostname: 'smtp.inria.fr'
diff --git a/data/subnets/sesi_rocquencourt_staging.yaml b/data/subnets/sesi_rocquencourt_staging.yaml
--- a/data/subnets/sesi_rocquencourt_staging.yaml
+++ b/data/subnets/sesi_rocquencourt_staging.yaml
@@ -14,10 +14,6 @@
   - 193.51.196.131
 dns::forwarder_insecure: true
 
-ntp::servers:
-  - sesi-ntp1.inria.fr
-  - sesi-ntp2.inria.fr
-
 internal_network: 192.168.130.0/24
 
 smtp::relay_hostname: 'smtp.inria.fr'