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@@ -11,9 +11,11 @@ iface eth1 inet manual
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netns myns
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```
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-On invocation of `ifup` it will create the necessary directories under
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-`/etc/netns/` and an empty `/etc/netns/<namespace>/network/interfaces` file if
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-it doesn't already exist.
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-
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-If it does and the interface is configured it will invoke `ifup` inside the
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-namespace.
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+On invocation of `ifup`:
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+ * if the namespace doesn't exist it will be created
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+ * if the folders `if-down.d`, `if-post-down.d`, `if-pre-up.d` and `if-up.d`
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+ under `/etc/netns/<namespace>/network` don't exist, they will be created
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+ * if the `/etc/netns/<namespace>/network/interfaces` file doesn't exist a
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+ blank one will be created
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+ * if it does and the interface is configured the the script will invoke `ifup`
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+ for this interface inside the namespace.
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