code: def block(self):
          '''
          pfctl -a switchyard -f- < rules.txt
          pfctl -a switchyard -F rules
          pfctl -t switchyard -F r
          '''
          st,output = _runcmd("/sbin/pfctl -aswitchyard -f -", self._rules)
          log_debug("Installing rules: {}".format(output)f block(self):
          '''
          pfctl -a switchyard -f- < rules.txt
          pfctl -a switchyard -F rules
          pfctl -t switchyard -F r
          '''
          st,output = _runcmd("/sbin/pfctl -aswitchyard -f -", self._rules)
          log_debug("Installing rules: {}".format(output))
docs: pfctl -a switchyard -f- < rules.txt
          pfctl -a switchyard -F rules
          pfctl -t switchyard -F r