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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
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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>
+
+; local variables:
+; mode: indented-text
+; mode: auto-fill
+; end:
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