title: Details of /proc/net/ip_conntrack and /proc/net/nf_conntrack
body: <p>I'm looking for a detailed documentation about content of files <code>/proc/net/nf_conntrack</code> and/or <code>/proc/net/ip_contrack</code> on Linux systems.</p>
  
  <p>Yes, I know, there are many utilities which can show me the content of these files in human readable format, but... I'd like to do it on a SOHO router, with Tomato USB firmware (by Shibby).
  The optware AFAIK deprecated and the entware doesn't contain any of these utilities, so I'd like to write a script instead of them, but I didn't find a detailed description of these files :(</p>