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CONFIG_DUMMY: Dummy net driver support

General informations

The Linux kernel configuration item CONFIG_DUMMY has multiple definitions:

Dummy net driver support found in arch/um/Kconfig_net

The configuration item CONFIG_DUMMY:

Help text

(none)

Dummy net driver support found in drivers/net/Kconfig

The configuration item CONFIG_DUMMY:

Help text

This is essentially a bit-bucket device (i.e. traffic you send to this device is consigned into oblivion) with a configurable IP address. It is most commonly used in order to make your currently inactive SLIP address seem like a real address for local programs. If you use SLIP or PPP, you might want to say Y here. Since this thing often comes in handy, the default is Y. It won't enlarge your kernel either. What a deal. Read about it in the Network Administrator's Guide, available from http://www.tldp.org/docs.html#guide.

To compile this driver as a module, choose M here: the module will be called dummy.

Hardware

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