diff --git a/data/defaults.yaml b/data/defaults.yaml
--- a/data/defaults.yaml
+++ b/data/defaults.yaml
@@ -963,6 +963,10 @@
   vlorentz-desktop/A:
     record: vlorentz-desktop.internal.softwareheritage.org
     data: 192.168.101.166
+  dbreplica/CNAME:
+    type: CNAME
+    record: dbreplica.internal.softwareheritage.org
+    data: somerset.internal.softwareheritage.org
 
 bind::resource_records::default_data:
   type: A