diff --git a/data/deployments/admin/common.yaml b/data/deployments/admin/common.yaml
--- a/data/deployments/admin/common.yaml
+++ b/data/deployments/admin/common.yaml
@@ -1,4 +1,6 @@
 swh::deploy::environment: admin
+dns::search_domains:
+  - internal.admin.swh.network
 
 swh::deploy::reverse_proxy::services:
   - hedgedoc
diff --git a/data/deployments/staging/common.yaml b/data/deployments/staging/common.yaml
--- a/data/deployments/staging/common.yaml
+++ b/data/deployments/staging/common.yaml
@@ -1,5 +1,7 @@
 ---
 swh::deploy::environment: staging
+dns::search_domains:
+  - internal.staging.swh.network
 
 swh::deploy::storage::db::host: db1.internal.staging.swh.network
 swh::deploy::storage::db::user: swh
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
@@ -2,8 +2,6 @@
 dns::local_cache: false
 dns::nameservers:
   - 192.168.100.29
-dns::search_domains:
-  - internal.admin.swh.network
 
 dns::local_nameservers:
   - 192.168.100.29
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
@@ -2,8 +2,6 @@
 dns::local_cache: false
 dns::nameservers:
   - 192.168.100.29
-dns::search_domains:
-  - internal.staging.swh.network
 
 dns::local_nameservers:
   - 192.168.100.29