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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/networking/alias.txt
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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1
2IP-Aliasing:
3============
4
5IP-aliases are additional IP-addresses/masks hooked up to a base
6interface by adding a colon and a string when running ifconfig.
7This string is usually numeric, but this is not a must.
8
9IP-Aliases are avail if CONFIG_INET (`standard' IPv4 networking)
10is configured in the kernel.
11
12
13o Alias creation.
14 Alias creation is done by 'magic' interface naming: eg. to create a
15 200.1.1.1 alias for eth0 ...
16
17 # ifconfig eth0:0 200.1.1.1 etc,etc....
18 ~~ -> request alias #0 creation (if not yet exists) for eth0
19
20 The corresponding route is also set up by this command.
21 Please note: The route always points to the base interface.
22
23
24o Alias deletion.
25 The alias is removed by shutting the alias down:
26
27 # ifconfig eth0:0 down
28 ~~~~~~~~~~ -> will delete alias
29
30
31o Alias (re-)configuring
32
33 Aliases are not real devices, but programs should be able to configure and
34 refer to them as usual (ifconfig, route, etc).
35
36
37o Relationship with main device
38
39 If the base device is shut down the added aliases will be deleted
40 too.
41
42
43Contact
44-------
45Please finger or e-mail me:
46 Juan Jose Ciarlante <jjciarla@raiz.uncu.edu.ar>
47
48Updated by Erik Schoenfelder <schoenfr@gaertner.DE>
49
50; local variables:
51; mode: indented-text
52; mode: auto-fill
53; end: