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-rw-r--r--Lib/test/support.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/test/support.py b/Lib/test/support.py
index 8d8e18735e..a9e1b77ce7 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -839,6 +839,8 @@ def transient_internet(resource_name, *, timeout=30.0, errnos=()):
default_gai_errnos = [
('EAI_NONAME', -2),
('EAI_NODATA', -5),
+ # Encountered when trying to resolve IPv6-only hostnames
+ ('WSANO_DATA', 11004),
]
denied = ResourceDenied("Resource '%s' is not available" % resource_name)