diff --git a/minode/tests/test_network.py b/minode/tests/test_network.py
index c8cdd31..ba4b754 100644
--- a/minode/tests/test_network.py
+++ b/minode/tests/test_network.py
@@ -142,8 +142,11 @@ class TestNetwork(unittest.TestCase):
         time_offset_connections(nodes, -4000)
 
 
-class TestListener(TestProcessProto):
-    """A separate test case for Listener with a process with --trusted-peer"""
+class TestConnection(TestProcessProto):
+    """
+    A base class for test cases using a process with --trusted-peer
+    to connect to a listener instance
+    """
     _process_cmd = ['minode', '--trusted-peer', '127.0.0.1']
 
     def setUp(self):
@@ -154,6 +157,10 @@ class TestListener(TestProcessProto):
         super().tearDownClass()
         shared.shutting_down = False
 
+
+class TestListener(TestConnection):
+    """A separate test case for Listener"""
+
     def test_listener(self):
         """Start Listener and try to connect"""
         with run_listener() as listener:
@@ -215,3 +222,16 @@ class TestListener(TestProcessProto):
                         if c.status == 'fully_established':
                             self.fail('Established a connection')
                     time.sleep(0.5)
+
+
+class TestBehavior(TestConnection):
+    """Test the behavior of the process with --trusted-peer"""
+
+    def test_advertisement(self):
+        """Ensure it doesn't advertise to connected peers their own IPs"""
+        started = time.time()
+        with run_listener() as _:
+            while time.time() - started < 30:
+                if ('127.0.0.1', 8444) in shared.unchecked_node_pool:
+                    self.fail('Got own IP in an addr message')
+                time.sleep(1)