anchor.diff:  
   
   [[exported-fields-icmp]]
  -=== ICMP fields
  +=== ICMP Fields
   
   ICMP specific event fields.
   
  
positive.code: 
  The version of the ICMP protocol.
  
  ==== icmp.request.type
  
  type: int
  
negative.code: type: int
  
  The request code.
  
  ==== icmp.response.message
  
  type: string
  
  A human readable form of the response.
  
  ==== icmp.response.type
  
  