python-zeroconf
diff --git a/‎zeroconf/__init__.py‎
Lines changed: 9 additions & 1 deletion b/‎zeroconf/__init__.py‎
Lines changed: 9 additions & 1 deletion
diff --git a/‎zeroconf/test.py‎
Lines changed: 1 addition & 0 deletions b/‎zeroconf/test.py‎
Lines changed: 1 addition & 0 deletions
@@ -2431,8 +2431,15 @@ def handle_response(self, msg: DNSIncoming) -> None:
         are held in the cache, and listeners are notified."""
         now = current_time_millis()
         for record in msg.answers:
+
+            updated = True
+
             if record.unique:  # https://tools.ietf.org/html/rfc6762#section-10.2
                 for entry in self.cache.entries():
+
+                    if entry == record:
+                        updated = False
+
                     if DNSEntry.__eq__(entry, record) and (record.created - entry.created > 1000):
                         self.cache.remove(entry)
 
@@ -2443,7 +2450,8 @@ def handle_response(self, msg: DNSIncoming) -> None:
                     maybe_entry.reset_ttl(record)
                 else:
                     self.cache.add(record)
-                self.update_record(now, record)
+                if updated:
+                    self.update_record(now, record)
             else:
                 if maybe_entry is not None:
                     self.update_record(now, record)
 
@@ -1125,6 +1125,7 @@ def mock_incoming_msg(service_state_change: r.ServiceStateChange) -> r.DNSIncomi
             service_updated_event.clear()
             service_text = b'path=/~humingchun/'
             zeroconf.handle_response(mock_incoming_msg(r.ServiceStateChange.Updated))
+            zeroconf.handle_response(mock_incoming_msg(r.ServiceStateChange.Updated))
             service_updated_event.wait(1)
             assert service_added is True
             assert service_updated_count == 2