1 files changed, 3 insertions, 1 deletions
diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py
index 629373fc47..b8849c0150 100644
--- a/synapse/http/matrixfederationclient.py
+++ b/synapse/http/matrixfederationclient.py
@@ -318,7 +318,9 @@ class MatrixFederationHttpClient:
         # We need to use a DNS resolver which filters out blacklisted IP
         # addresses, to prevent DNS rebinding.
         self.reactor = BlacklistingReactorWrapper(
-            hs.get_reactor(), None, hs.config.federation_ip_range_blacklist
+            hs.get_reactor(),
+            hs.config.federation_ip_range_whitelist,
+            hs.config.federation_ip_range_blacklist,
         )  # type: ISynapseReactor
 
         user_agent = hs.version_string