old_contents: {
      "inbound": [
          {
              "cookie": 1,
              "match": 
              {
                  "tcp_dst": 4321
              },
              "action": 
              {
                  "fwd": 0
              }
          },
          {
              "cookie": 2,
              "match": 
              {
                  "tcp_dst": 4322
              },
              "action": 
              {
                  "fwd": 1
              }
          },
           {
              "cookie": 3,
              "match": 
              {
                  "tcp_dst": 4323
              },
              "action": 
              {
                  "drop": 0
              }
          }
      ]
  }
new_contents: {
      "inbound": [
          {
              "cookie": 1,
              "match": 
              {
                  "tcp_dst": 4321
              },
              "action": 
              {
                  "fwd": 0
              }
          },
          {
              "cookie": 2,
              "match": 
              {
                  "tcp_dst": 4322
              },
              "action": 
              {
                  "fwd": 1
              }
          },
           {
              "cookie": 3,
              "match": 
              {
                  "eth_src": '08:00:27:89:3b:9f'
              },
              "action": 
              {
                  "drop": 0
              }
          }
      ]
  }
subject: Add inbound drop policy for participant 3 based on eth_src of participant 1