Handle duplicate removes

bdraco · bdraco · commit af12a2fb0f0e · 2021-07-27T05:53:16.000-10:00
diff --git a/zeroconf/_handlers.py b/zeroconf/_handlers.py
@@ -331,7 +331,7 @@ def async_updates_from_response(self, msg: DNSIncoming) -> None:
         updates: List[RecordUpdate] = []
         address_adds: List[DNSAddress] = []
         other_adds: List[DNSRecord] = []
-        removes: List[DNSRecord] = []
+        removes: Set[DNSRecord] = set()
         now = msg.now
         unique_types: Set[Tuple[str, int, int]] = set()
 
@@ -355,7 +355,7 @@ def async_updates_from_response(self, msg: DNSIncoming) -> None:
             # expired and exists in the cache
             elif maybe_entry is not None:
                 updates.append(RecordUpdate(record, maybe_entry))
-                removes.append(record)
+                removes.add(record)
 
         if unique_types:
             self._async_mark_unique_cached_records_older_than_1s_to_expire(unique_types, msg.answers, now)
diff --git a/zeroconf/_utils/net.py b/zeroconf/_utils/net.py
@@ -291,6 +291,13 @@ def add_multicast_member(
                 interface,
             )
             return False
+        if is_v6 and _errno == errno.ENODEV:
+            log.info(
+                'Address in use when adding %s to multicast group, '
+                'it is expected to happen when the device does not have ipv6',
+                interface,
+            )
+            return False
         raise
     return True
 
