diff --git a/python/online/fxreader/pr34/commands.py b/python/online/fxreader/pr34/commands.py
index ac10bf0..3ddc74a 100644
--- a/python/online/fxreader/pr34/commands.py
+++ b/python/online/fxreader/pr34/commands.py
@@ -1158,6 +1158,7 @@ done'
     )
 
 def http_server(argv):
+    from .commands_typed import os as commands_os
     assert isinstance(argv, list) and all([isinstance(o, str) for o in argv])
     parser = optparse.OptionParser()
     parser.add_option(
@@ -1215,10 +1216,17 @@ def http_server(argv):
 
     try:
         assert not socket.inet_aton(options.host) is None
-        subprocess.check_call([
-            'ping', '-w', '1',
-            options.host
-        ])
+        # subprocess.check_call([
+        #     'ping', '-w', '1',
+        #     options.host
+        # ])
+        assert options.host in sum([
+            [
+                o2.local
+                for o2 in o.addr_info
+            ]
+            for o in commands_os.interfaces_index()
+        ], [])
     except Exception:
         raise RuntimeError('invalid ip address %s' % options.host)
 
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 835d2fe..6c471a1 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = 'online.fxreader.pr34'
-version = '0.1.5.9+27.1'
+version = '0.1.5.9+27.2'
 
 dependencies = [
     #"-r requirements.txt",
diff --git a/releases/whl/online_fxreader_pr34-0.1.5.9+27.2-py3-none-any.whl b/releases/whl/online_fxreader_pr34-0.1.5.9+27.2-py3-none-any.whl
new file mode 100644
index 0000000..1facb36
--- /dev/null
+++ b/releases/whl/online_fxreader_pr34-0.1.5.9+27.2-py3-none-any.whl
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eefcb7da4191f1b10128201346c09db768692a1f29d3f64a7f19d1440799b279
+size 69753