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by trulyme
1887 days ago
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Default Docker configs are atrocious. Most devs/devops don't even know that when it creates a network, it takes a /16 ip range out of 172.[17-31].0.0/16 or 192.168.[0-240].20/20 by default. It is just a matter of time before a restart makes it collide with an existing network range. It does skip networks defined on local interfaces at least, but this only means that devs don't learn about this landmine on their own machines, nuking production instead. The default should reserve a single ip range and simply fail (with a nice message) if more are needed. |
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