1 files changed, 53 insertions, 0 deletions

diff --git a/Documentation/networking/alias.txt b/Documentation/networking/alias.txt
new file mode 100644
index 000000000000..cd12c2ff518a
--- /dev/null
+++ b/Documentation/networking/alias.txt
@@ -0,0 +1,53 @@
+
+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: