From b710b9d7b9b60bf13dcc062d8a69dd49e4fcab17 Mon Sep 17 00:00:00 2001
From: Tian Gao <gaogaotiantian@hotmail.com>
Date: Sun, 22 Oct 2023 11:50:51 -0700
Subject: [PATCH] gh-110196: Fix ipaddress.IPv6Address.__reduce__ (GH-110198)

---
 Lib/ipaddress.py                                           | 3 +++
 Lib/test/test_ipaddress.py                                 | 7 +++++++
 .../Library/2023-10-02-05-23-27.gh-issue-110196.djwt0z.rst | 1 +
 3 files changed, 11 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2023-10-02-05-23-27.gh-issue-110196.djwt0z.rst

diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index f5aba434fd4253f..68ddfbeb4bc2128 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -1970,6 +1970,9 @@ def __eq__(self, other):
             return False
         return self._scope_id == getattr(other, '_scope_id', None)
 
+    def __reduce__(self):
+        return (self.__class__, (str(self),))
+
     @property
     def scope_id(self):
         """Identifier of a particular zone of the address's scope.
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index 6f204948c9fc486..33a0f9894a32f99 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -4,6 +4,7 @@
 """Unittest for ipaddress module."""
 
 
+import copy
 import unittest
 import re
 import contextlib
@@ -542,11 +543,17 @@ def assertBadPart(addr, part):
 
     def test_pickle(self):
         self.pickle_test('2001:db8::')
+        self.pickle_test('2001:db8::%scope')
 
     def test_weakref(self):
         weakref.ref(self.factory('2001:db8::'))
         weakref.ref(self.factory('2001:db8::%scope'))
 
+    def test_copy(self):
+        addr = self.factory('2001:db8::%scope')
+        self.assertEqual(addr, copy.copy(addr))
+        self.assertEqual(addr, copy.deepcopy(addr))
+
 
 class NetmaskTestMixin_v4(CommonTestMixin_v4):
     """Input validation on interfaces and networks is very similar"""
diff --git a/Misc/NEWS.d/next/Library/2023-10-02-05-23-27.gh-issue-110196.djwt0z.rst b/Misc/NEWS.d/next/Library/2023-10-02-05-23-27.gh-issue-110196.djwt0z.rst
new file mode 100644
index 000000000000000..341f3380fffd60c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-02-05-23-27.gh-issue-110196.djwt0z.rst
@@ -0,0 +1 @@
+Add ``__reduce__`` method to :class:`IPv6Address` in order to keep ``scope_id``