diff --git a/global/overlay/etc/puppet/cosmos-rules.yaml b/global/overlay/etc/puppet/cosmos-rules.yaml
index cfe02f0..370dc70 100644
--- a/global/overlay/etc/puppet/cosmos-rules.yaml
+++ b/global/overlay/etc/puppet/cosmos-rules.yaml
@@ -48,3 +48,8 @@ internal-dco-test-db-2.geteduroam.sunet.se:
    sunet::dockerhost2:
      nat: false
    geteduroam::db:
+
+internal-sto3-test-db-3.geteduroam.sunet.se:
+   sunet::dockerhost2:
+     nat: false
+   geteduroam::db: