diff --git a/contrib/vagrant/local.conf b/contrib/vagrant/local.conf
index 338b1aa33..2057e153f 100644
--- a/contrib/vagrant/local.conf
+++ b/contrib/vagrant/local.conf
@@ -16,6 +16,14 @@ HOST_IP=$SERVICE_HOST
 VERBOSE=True
 LOG_COLOR=True
 
+# Test a Gerrit Review
+# DESIGNATE_REPO=https://review.opendev.org/openstack/designate
+# DESIGNATE_BRANCH=refs/changes/41/765541/1
+
+# Test a particular branch
+# DESIGNATE_REPO=https://opendev.org/openstack/designate.git
+# DESIGNATE_BRANCH=stable/stein
+
 # Disable all services except core ones
 disable_all_services
 enable_service rabbit mysql key