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IP-Aliasing:
============
IP-aliases are additional IP-addresses/masks hooked up to a base
interface by adding a colon and a string when running ifconfig.
This string is usually numeric, but this is not a must.
IP-Aliases are avail if CONFIG_INET (`standard' IPv4 networking)
is configured in the kernel.
o Alias creation.
Alias creation is done by 'magic' interface naming: eg. to create a
200.1.1.1 alias for eth0 ...
# ifconfig eth0:0 200.1.1.1 etc,etc....
~~ -> request alias #0 creation (if not yet exists) for eth0
The corresponding route is also set up by this command.
Please note: The route always points to the base interface.
o Alias deletion.
The alias is removed by shutting the alias down:
# ifconfig eth0:0 down
~~~~~~~~~~ -> will delete alias
o Alias (re-)configuring
Aliases are not real devices, but programs should be able to configure and
refer to them as usual (ifconfig, route, etc).
o Relationship with main device
If the base device is shut down the added aliases will be deleted
too.
Contact
-------
Please finger or e-mail me:
Juan Jose Ciarlante <jjciarla@raiz.uncu.edu.ar>
Updated by Erik Schoenfelder <schoenfr@gaertner.DE>
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