diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index ffe5812..08d35d8 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -763,6 +763,7 @@
         elif kind == '#PROXY':
             exposed, token = result
             proxytype = self._manager._registry[token.typeid][-1]
+            token.address = self._token.address
             proxy = proxytype(
                 token, self._serializer, manager=self._manager,
                 authkey=self._authkey, exposed=exposed
diff --git a/Misc/NEWS b/Misc/NEWS
index 5c9e367..405bf5c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,8 @@
 Library
 -------
 
+- Issue #17261: Ensure multiprocessing's proxies use proper address.
+
 - Issue #17097: Make multiprocessing ignore EINTR.
 
 - Issue #18155: The csv module now correctly handles csv files that use