docs: def version(family='ipv4'):
      '''
      Return version from iptables --version
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' iptables.version
  
          IPv6:
          salt '*' iptables.version family=ipv6
      '''
      cmd = '{0} --version' . format(_iptables_cmd(family))
      out = __salt__['cmd.run'](cmd).split()
      return out[1]