Commit 735dadf8 authored by Tobin C. Harding's avatar Tobin C. Harding Committed by David S. Miller

docs: networking: Convert alias.txt to rst

The kernel documentation is now restructured text. Convert the IP
aliasing documentation and include it in the toplevel kernel
documentation.

 - Fix heading adornments.
 - Correctly indent code snippets.
 - Limit line length to 72 characters inline with kernel documentation
   standards.
 - Add license identifier.
Signed-off-by: default avatarTobin C. Harding <me@tobin.cc>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f15f084f
......@@ -18,8 +18,6 @@ README.ipw2200
- README for the Intel PRO/Wireless 2915ABG and 2200BG driver.
README.sb1000
- info on General Instrument/NextLevel SURFboard1000 cable modem.
alias.txt
- info on using alias network devices.
altera_tse.txt
- Altera Triple-Speed Ethernet controller.
arcnet-hardware.txt
......
.. SPDX-License-Identifier: GPL-2.0
===========
IP-Aliasing
===========
IP-aliases are an obsolete way to manage multiple IP-addresses/masks
per interface. Newer tools such as iproute2 support multiple
address/prefixes per interface, but aliases are still supported
for backwards compatibility.
An alias is formed by adding a colon and a string when running ifconfig.
This string is usually numeric, but this is not a must.
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.
Alias deletion
==============
The alias is removed by shutting the alias down::
# ifconfig eth0:0 down
~~~~~~~~~~ -> will delete alias
Alias (re-)configuring
======================
Aliases are not real devices, but programs should be able to configure
and refer to them as usual (ifconfig, route, etc).
Relationship with main device
=============================
If the base device is shut down the added aliases will be deleted too.
IP-Aliasing:
============
IP-aliases are an obsolete way to manage multiple IP-addresses/masks
per interface. Newer tools such as iproute2 support multiple
address/prefixes per interface, but aliases are still supported
for backwards compatibility.
An alias is formed by adding a colon and a string when running ifconfig.
This string is usually numeric, but this is not a must.
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.
......@@ -17,6 +17,7 @@ Contents:
msg_zerocopy
failover
net_failover
alias
.. only:: subproject
......
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