diff --git a/python/online/fxreader/pr34/commands_typed/os.py b/python/online/fxreader/pr34/commands_typed/os.py
index 34d76b0..c2bdc86 100644
--- a/python/online/fxreader/pr34/commands_typed/os.py
+++ b/python/online/fxreader/pr34/commands_typed/os.py
@@ -1,5 +1,7 @@
 import shutil
 import glob
+import subprocess
+import pydantic
 import pathlib
 import ctypes
 import os
@@ -93,9 +95,9 @@ def runtime_libdirs_init(
         raise NotImplementedError
 
 class interfaces_index_t:
-    @dataclasses.dataclass(frozen=True)
+    @dataclasses.dataclass
     class Interface:
-        @dataclasses.dataclass(frozen=True)
+        @dataclasses.dataclass
         class AddrInfo:
             family: str
             local: str
@@ -103,32 +105,13 @@ class interfaces_index_t:
         name: str
         addr_info: list[AddrInfo]
 
-def interfaces_index() -> list[Interfaces]:
-    ip_addr_res: Any = json.loads(
+def interfaces_index() -> list[interfaces_index_t.Interface]:
+    res = pydantic.RootModel[
+        list[interfaces_index_t.Interface]
+    ].model_validate_json(
         subprocess.check_output([
             'ip', '-j', 'addr',
         ]).decode('utf-8')
-    )
+    ).root
 
-    assert isinstance(ip_addr_res, list)
-
-    ip_addr_res2 = cast(list[Any], p_addr_res,)
-
-    assert all([
-        isinstance(o, dict)
-        for o in ip_addr_res2.items()
-    ])
-
-    ip_addr_res3 = cast(list[dict[Any, Any]], ip_addr_res2)
-
-    assert all([
-        assert isinstance(k, str)
-        for k, v in o.items()
-        for o in ip_addr_res3
-    ])
-
-    ip_addr_res4 = cast(list[dict[str, Any]], ip_addr_res3)
-
-    res : list[interfaces_index_t.Interface] = []
-
-    for o in ip_addr_res4:
+    return res
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 35976b5..835d2fe 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = 'online.fxreader.pr34'
-version = '0.1.5.9'
+version = '0.1.5.9+27.1'
 
 dependencies = [
     #"-r requirements.txt",
diff --git a/releases/whl/online_fxreader_pr34-0.1.5.9+27.1-py3-none-any.whl b/releases/whl/online_fxreader_pr34-0.1.5.9+27.1-py3-none-any.whl
new file mode 100644
index 0000000..55e3df5
--- /dev/null
+++ b/releases/whl/online_fxreader_pr34-0.1.5.9+27.1-py3-none-any.whl
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c0f6f824ee5e87742e4744b13bc86787c9cbd8eecec722103aa603f6fff9566e
+size 69644