Python 3.9.6 on arm64-darwin (macOS 26.1 Tahoe)

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS

ASI Note: "crashed on child side of fork pre-exec"

Termination: Segmentation fault: 11

Crashing Thread Stack (Thread 0):
  _os_log_preferences_refresh +56
  os_log_type_enabled +768
  [libnetwork.dylib internal]
  [libnetwork.dylib internal]
  [libnetwork.dylib internal]
  [libnetwork.dylib internal]
  [libnetwork.dylib internal]
  nw_path_access_agent_cache +188
  [libnetwork.dylib internal]
  [libnetwork.dylib internal]
  _nw_path_update_is_viableTm +84
  nw_path_snapshot_path(NWConcrete_nw_path*) +64
  nw_path_evaluator_evaluate(NWConcrete_nw_path_evaluator*, int*) +2308
  nw_path_create_evaluator_for_endpoint +68
  nw_nat64_v4_address_requires_synthesis +240
  _gai_nat64_second_pass +280
  si_addrinfo +1388
  getaddrinfo +168
  _socket.cpython-39-darwin.so (socket.getaddrinfo)
  _PyObject_MakeTpCall +356
  _PyEval_EvalFrameDefault +8728
  _PyFunction_Vectorcall +228
  PyEval_EvalCode +80
  PyRun_SimpleFileExFlags +812
  Py_RunMain +1448
  Py_BytesMain +40
  start +7184

The crash occurs in Apple's Network framework during NAT64 address synthesis,
specifically when _os_log_preferences_refresh attempts to access invalid memory
in a forked child process.