title: How to make sure transactions take 0 fee in a private Ethereum blockchain?
body: <p>I have a private parity node setup on my laptop. How can I make sure that there is <strong>0 transaction fee</strong> whenever a transaction is posted in this private ethereum blockchain, meaning that I can post a transaction giving "gas: 0"?</p>
  
  <p>Example: Account A has 20 ether, Account B has 0 ether. When I transfer 10 ether from Account A to Account B, Account A now shows 9.980 and Account B shows 10.</p>
  
  <p>How can I prevent the extra gas being deducted?</p>
  
  <p>Any help is appreciated.</p>