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Add a rule at the end of the specified chain of the specified table. The-A option means that the rule is added at the end of the corresponding chain. When the-t option is omitted, it means that the rule in the filter table is operated by default.2. Competition mode: Before the competition, each group of athletes has one leg tied together with cloth straps (tied above the ankle joint and the lower leg close to the knee joint, tied firmly), starting in a standing mode, after the whistle sounded, the three started at the same time,(未完待续……) show_style();。In the process of DNS resolution, the client initiates a query request, and the DNS server may need to make additional queries to complete the resolution process and give a response, which will consume certain computing and network resources. If an attacker uses a large number of controlled hosts to continuously send resolution requests for different domain names, the cache of the DNS server will be continuously refreshed, and the failure of a large number of resolution requests to hit the cache will cause the DNS server to consume additional resources for iterative queries, which will greatly increase the resource consumption of the DNS server.年青帅气的公司CEO、貌美的女经理、“五星级饭店”主厨以及一班昔日大学同窗在一次聚会上酒醉驾船出海，谁料到一阵突如其来的风暴将这艘豪华游艇击沉。清醒后的他们背流落到一个无名岛屿，迷失荒岛中的他们面临危机四伏的险境，食物短缺加上寄居的山洞崩塌，然而比环境更险恶的是捉摸不透的人心，为了生存，曾经的同学会变成猎人还是猎物，一场大逃杀即将开始.....是啊，真是让人不省心，这个刘邦什么时候都是这么狡诈卑鄙。The following contents of this article are all aimed at CC attacks.