简单的说divert socket就是由user ace(用户空间)的程序来处理kernel(内核)中的IP packet(IP信息包)，这个divert socket最早应用与Free D系统中，如NAT就是应用了divert socket。
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user ace
用户的王牌
以上为机器翻译结果，长、整句建议使用 人工翻译 。
ACLs use access control entries (ACE) to control user and group access and denial. Though more commonly known as rules, they are.
ACL使用访问控制条目(ace)控制用户和组的访问权。
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Though Artfire has a long way to go in terms of site traffic, their ace in the hole is their value-added user-centered support.
FORBES: Etsy's Experiment With Social Could Be Costly
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