[PATCH iptables] tests: iptables-test, xlate-test: use `os.unshare` Python function

[PATCH iptables] tests: iptables-test, xlate-test: use `os.unshare` Python function

[Jeremy Sowden]

Since Python 3.12 the standard library has included an `os.unshare` function.
Use it if it is available.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
---
 iptables-test.py | 9 ++++++++-
 xlate-test.py    | 9 ++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/iptables-test.py b/iptables-test.py
index 66db552185bc..40ed77035c02 100755
--- a/iptables-test.py
+++ b/iptables-test.py
@@ -572,7 +572,14 @@ def show_missing():
     print('\n'.join(missing))
 
 def spawn_netns():
-    # prefer unshare module
+    # prefer stdlib unshare function ...
+    try:
+        os.unshare(os.CLONE_NEWNET)
+        return True
+    except Exception as e:
+        pass
+
+    # ... or unshare module
     try:
         import unshare
         unshare.unshare(unshare.CLONE_NEWNET)
diff --git a/xlate-test.py b/xlate-test.py
index 1c8cfe71ffd4..247852939c9e 100755
--- a/xlate-test.py
+++ b/xlate-test.py
@@ -203,7 +203,14 @@ def load_test_files():
 
 
 def spawn_netns():
-    # prefer unshare module
+    # prefer stdlib unshare function ...
+    try:
+        os.unshare(os.CLONE_NEWNET)
+        return True
+    except Exception as e:
+        pass
+
+    # ... or unshare module
     try:
         import unshare
         unshare.unshare(unshare.CLONE_NEWNET)
-- 
2.51.0

Re: [PATCH iptables] tests: iptables-test, xlate-test: use `os.unshare` Python function

[Phil Sutter]

On Wed, Mar 04, 2026 at 06:13:03PM +0000, Jeremy Sowden wrote:
> Since Python 3.12 the standard library has included an `os.unshare` function.
> Use it if it is available.
> 
> Signed-off-by: Jeremy Sowden <jeremy@azazel.net>

Patch applied, thanks!

We have the same pattern in nftables' tests/py/nft-test.py, could you
please send a patch for that as well?

Thanks, Phil

Re: [PATCH iptables] tests: iptables-test, xlate-test: use `os.unshare` Python function

[Jeremy Sowden]

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On 2026-03-05, at 12:11:57 +0100, Phil Sutter wrote:
> On Wed, Mar 04, 2026 at 06:13:03PM +0000, Jeremy Sowden wrote:
> > Since Python 3.12 the standard library has included an `os.unshare`
> > function.  Use it if it is available.
> > 
> > Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
> 
> Patch applied, thanks!
> 
> We have the same pattern in nftables' tests/py/nft-test.py, could you please
> send a patch for that as well?

Yup.

J.

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