diff --git a/requires.py b/requires.py
index 586d27e..f499ef4 100644
--- a/requires.py
+++ b/requires.py
@@ -56,6 +56,7 @@ class MySQLRouterRequires(reactive.RelationBase):
         relation_info = {
             prefix + '_username': username,
             prefix + '_hostname': hostname,
+            'private-address': hostname,
         }
         self.set_prefix(prefix)
         self.set_remote(**relation_info)
diff --git a/unit_tests/test_requires.py b/unit_tests/test_requires.py
index c77c2ae..a28f952 100644
--- a/unit_tests/test_requires.py
+++ b/unit_tests/test_requires.py
@@ -232,7 +232,8 @@ class TestMySQLRouterRequires(unittest.TestCase):
         _prefix = "prefix"
         _expected = {
             "{}_username".format(_prefix): _user,
-            "{}_hostname".format(_prefix): _host}
+            "{}_hostname".format(_prefix): _host,
+            "private-address": _host}
         self.mysql_router.configure_db_router(_user, _host, prefix=_prefix)
         self.set_remote.assert_called_once_with(**_expected)
         self.set_local.assert_called_once_with(**_expected)