title: The Site Can't Be Reach Even Host Is '0.0.0.0' (flask,python)
body: <p>So, I just made a simple script like this</p>
  
  <pre><code>from flask import Flask
  
  app = Flask(__name__)
  
  @app.route('/')
  def hello():
      return 'Hello, World!'
  
  if __name__ == '__main__':
      app.run(host='0.0.0.0',port=3000)
  </code></pre>
  
  <p>I am using my campus network. This is my IP configuration after connect to my campus WiFi</p>
  
  <p><a href="https://i.stack.imgur.com/BroeJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BroeJ.png" alt="My IP Configuration Connected to My Campus WiFi"></a></p>
  
  <p>But, when I'm trying to open 10.10.228.169:3000 from another laptop that also connect to the same WiFi, "This Site Can't Be Reach" is shown. But, if i try to open it in my laptop that run that script, it worked. Can you tell me what's wrong here? Thank you in advance!</p>