两根茎可以入一洞吗

As shown in the above figure, when the action corresponding to the iptables rule in host 156 is REJECT, when pinging from host 146, it directly prompts "the target is unreachable" and is not stuck there as before. It seems that REJECT is more "straightforward" than DROP.Centos7, The service is no longer started using init-style scripts, Instead, the unit file is used, Therefore, commands like service iptables start can no longer be used in centos7, Therefore, service iptables save cannot be executed. At the same time, firewall is used to replace the original iptables service in centos7, but don't worry, we just need to install iptables and iptables-services through yum source (iptables are usually installed by default, but iptables-services are not installed by default in centos7). After installing iptables-services in centos7, the rules can be saved by the service iptables save command, as in centos6, and the rules are also saved in the/etc/sysconfig/iptables file.The Context class is a context class, and Plus and Minus are implementations for calculation respectively. The code is as follows:故事发生在巴尔的摩的毒品集中地，毒品商Barksdale被卷入一宗谋杀案中，. Jimmy受命组织一个由杀人犯和贩毒者组成的团队，来对付毒品头子阿文。阿文有一群忠心耿耿的拥护者，而且眼线众多。得到密报后，他们一方面装作与政府合作，另一方面暗中与对手奥尔玛较劲，奥尔玛曾经抢夺过阿文的毒品，并转手倒卖。调查监督员Daniels此时正面临因受贿被调查的麻烦。 该剧以毒品为中心，引发出关于各方面生活的一个“食物链”，涉及到吸毒者、毒品商、警察和政客，目前评论褒贬不一。//Declares a delegate variable and takes a known method as an argument to its constructor