Netlink passes datagrams (like UDP) but can also pass ancillary data (like Unix domain sockets). Netlink also supports a somewhat-limited multicast capability, where many programs can receive events sent by one source.
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，详情可参考51吃瓜
（一）行政执法人员资格、证件管理制度；
但更痛的是口碑的持续滑坡和竞品带来的竞争，完美日记的产品以代工为主，研发投入占比极低，核心竞争力停留在包装、配色与营销概念，缺乏技术壁垒。当花西子、酵色、橘朵、彩棠等一大批国货彩妆品牌跟进内容种草+平替模式后，完美日记的差异化优势迅速消失。