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friendica (DFRN) - 来源链接
似乎 gnu.org 和 pubs.acs.org 都 down 了，不知道发生了什么……但无论如何下面是我今天遇到疑似网络问题时的脑抽操作：
1. A man holding a stick, riding a bike, labeled "SSH remote"; 2. Man trying to put the stick into the front wheel, labeled "ifdown"; 3. Bike fallen, kneel hurts.
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