[4.2.x] Fixed #36098 -- Fixed validate_ipv6_address()/validate_ipv46_address() crash for non-string values.

Regression in ca2be7724e1244a4cb723de40a070f873c6e94bf.

Backport of b3c5830769d8a5dbf2f974da7116fe503c9454d9 from main.

1 files changed, 6 insertions, 4 deletions

diff --git a/django/utils/ipv6.py b/django/utils/ipv6.py
index de41a97f72..487fa7b1e1 100644
--- a/django/utils/ipv6.py
+++ b/django/utils/ipv6.py
@@ -49,12 +49,14 @@ def clean_ipv6_address(
     return str(addr)
 
 
-def is_valid_ipv6_address(ip_str):
+def is_valid_ipv6_address(ip_addr):
     """
-    Return whether or not the `ip_str` string is a valid IPv6 address.
+    Return whether the `ip_addr` object is a valid IPv6 address.
     """
+    if isinstance(ip_addr, ipaddress.IPv6Address):
+        return True
     try:
-        _ipv6_address_from_str(ip_str)
-    except ValueError:
+        _ipv6_address_from_str(ip_addr)
+    except (TypeError, ValueError):
         return False
     return True