diff --git a/ironic_python_agent/__init__.py b/ironic_python_agent/__init__.py
index d2480d8ff..c059101a9 100644
--- a/ironic_python_agent/__init__.py
+++ b/ironic_python_agent/__init__.py
@@ -9,8 +9,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
 import eventlet
+import os
+
+os.environ["EVENTLET_NO_GREENDNS"] = "yes"
 
 # NOTE(JayF) Without monkey_patching socket, API requests will hang with TLS
 # enabled. Enabling more than just socket for monkey patching causes failures
</div><div class="naked_ctrl">
<form action="/index.cgi/speech" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://opendev.org/openstack/ironic-python-agent/commit/5d3192e93a4d4eb5435b46132c48a052ddfd08a3.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://opendev.org/openstack/ironic-python-agent/commit/5d3192e93a4d4eb5435b46132c48a052ddfd08a3.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech" selected="selected">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>