diff --git a/hooks/hooks.py b/hooks/hooks.py
index 6b613ea3..38de5edf 100755
--- a/hooks/hooks.py
+++ b/hooks/hooks.py
@@ -239,10 +239,7 @@ def cluster_joined(rid=None):
             config('os-{}-network'.format(addr_type))
         )
         if address:
-            relation_set(
-                relation_id=rid,
-                settings={'{}-address'.format(addr_type): address}
-            )
+            settings['{}-address'.format(addr_type)] = address
 
     if config('prefer-ipv6'):
         private_addr = get_ipv6_addr(exc_list=[config('vip')])[0]
diff --git a/unit_tests/test_hooks.py b/unit_tests/test_hooks.py
index 4687b040..007cc35d 100644
--- a/unit_tests/test_hooks.py
+++ b/unit_tests/test_hooks.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from mock import (
-    patch,
+    patch, call
 )
 
 from test_utils import (
@@ -218,6 +218,28 @@ class CephRadosGWTests(CharmTestCase):
         self.assertEquals(ceph_hooks.canonical_url({}, PUBLIC),
                           'http://[%s]' % ipv6_addr)
 
+    @patch.object(ceph_hooks, 'get_address_in_network')
+    def test_cluster_joined(self, mock_get_addr):
+        addrs = {'10.0.0.0/24': '10.0.0.1',
+                 '10.0.1.0/24': '10.0.1.1',
+                 '10.0.2.0/24': '10.0.2.1'}
+
+        def fake_get_address_in_network(network):
+            return addrs.get(network)
+
+        mock_get_addr.side_effect = fake_get_address_in_network
+
+        self.test_config.set('os-public-network', '10.0.0.0/24')
+        self.test_config.set('os-admin-network', '10.0.1.0/24')
+        self.test_config.set('os-internal-network', '10.0.2.0/24')
+
+        ceph_hooks.cluster_joined()
+        self.relation_set.assert_has_calls(
+            [call(relation_id=None,
+                  **{'admin-address': '10.0.1.1',
+                     'internal-address': '10.0.2.1',
+                     'public-address': '10.0.0.1'})])
+
     def test_cluster_changed(self):
         _id_joined = self.patch('identity_joined')
         self.relation_ids.return_value = ['rid']