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What is allow hotplug?
allow-hotplug: *wait* for kernel+drivers+udev to detect the device, then ip link set up it. The only thing that can deal with annoying USB, SDIO, etc. This can be kinda important when non-auto-loading stuff is involved, or when network file systems are involved.
What is hotplug in Linux?
hotplug is a program which is used by the kernel to notify user mode software when some significant (usually hardware-related) events take place. An example is when a USB or Cardbus device has just been plugged in. The name of the agent is given by the kernel as the first command-line parameter.
What’s the difference between allow-auto and allow-hotplug?
allow-auto interface – Same as auto. allow-hotplug interface – Start the interface when a “hotplug” event is detected. In the real world, this is used in the same situations as auto but the difference is that it will wait for an event like “being detected by udev hotplug api” or “cable linked”.
How is allow-hotplug interface used in real world?
allow-hotplug interface – Start the interface when a “hotplug” event is detected. In the real world, this is used in the same situations as auto but the difference is that it will wait for an event like “being detected by udev hotplug api” or “cable linked”. See ” Related Stuff (hotplug) ” for additional info.
When to use ” allow ” or ” auto ” eth0 in Debian?
According to https://manpages.debian.org/stretch/ifupdown/interfaces.5.en.html the ‘auto’ keyword is still allowed and used e.g. by Ubuntu. Searching for this problem, I find the recommendation to use “allow-hotplug eth0” and not “auto eth0” Can you point me to the URL?
Where does auto call the network interface in Debian?
Where auto starts the interface at boot and iface calls the network interface (in this case lo, loopback). All lines beginning with “ auto ” specify the interfaces which will be enabled when running “ ifup -a ”, a command executed at boot. Lines beginning with “iface” have the following syntax: