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30年代的上海，大富豪井家育有二子二女，父亲迎娶二姨太宝珠后，宝珠与恋人沈斌合谋使井家败落。井家二姐妹同时爱上了医师高尚谦，妹妹莉梅摔伤了脚致跛残，姐姐莉雪促成了妹妹的婚事，远走他乡。5年后，莉雪终于在风雪中回到了充满回忆的老地方，就在这天夜里，莉雪的住处发生命案，而死者竟是当年井家的仇人...他们这时才想起：眼前这人不仅是张家的小少爷，更是从西南转战西北，灭了几个国家的玄武王。葫芦便问他道：咋没去听板栗哥哥说故事哩？青莲笑着低头，过了一会才道：吵人。[Traffic]Spider Prince Nicholas他身后还跟着一个小尾巴，小尾巴身后还跟着个大尾巴。TCP works in the Transport layer, IP in the Network layer, and ARP in the DataLink layer; The data on the second layer is called Frame, the data on the third layer is called Packet, and the data on the fourth layer is called Segment. At the same time, we need to simply know that when data is sent from the application layer, header information will be added to each layer, encapsulated, and then sent to the data receiving end. This basic process you need to know, that is, every data will go through the process of data encapsulation and unencapsulation.