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Stefan Tomanek b1d0525f9c ip rule: add route suppression options
When configuring a system with multiple network uplinks and default routes, it
is often convenient to reference a routing table multiple times - but reject
its routing decision if certain constraints are not met by it.

Consider this setup:

$ ip route add table secuplink default via 10.42.23.1

$ ip rule add pref 100            table main suppress_prefixlength 0
$ ip rule add pref 150 fwmark 0xA table secuplink

With this setup, packets marked 0xA will be processed by the additional routing
table "secuplink", but only if no suitable route in the main routing table can
be found. By suppressing entries with a prefixlength of 0 (or less), the
default route (/0) of the table "main" is hidden to packets processed by rule
100; packets traveling to destinations via more specific routes are processed
as usual.

It is also possible to suppress a routing entry if a device belonging to
a specific interface group is to be used:

$ ip rule add pref 150 table main suppress_group 1

Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
2013-08-04 11:54:15 -07:00
bridge iproute2 vxlan documentation update for bridge command 2013-07-09 09:38:36 -07:00
doc Change how pdf doc's are created 2012-09-24 12:50:37 -07:00
etc/iproute2 tc: add canid ematch to ematch_map 2012-11-30 08:27:58 -08:00
examples dhcp-client-script: don't use /tmp 2012-02-15 10:05:45 -08:00
genl Fix build when shared libraries are disabled 2013-03-13 08:29:59 -07:00
include Merge branch 'master' into net-next-3.11 2013-08-04 11:53:10 -07:00
ip ip rule: add route suppression options 2013-08-04 11:54:15 -07:00
lib ip link: fix display of interface groups 2013-08-04 11:50:38 -07:00
man ip rule: add route suppression options 2013-08-04 11:54:15 -07:00
misc ss: add more TCP_INFO components 2013-06-25 13:33:07 -07:00
netem netem: fix installs of dist files 2010-07-31 19:31:04 -07:00
tc Make tc and ip batch mode consistent 2013-07-16 10:04:05 -07:00
testsuite Fix modes of test files 2007-09-05 12:00:01 +01:00
.gitignore Don't put configure files in /tmp 2012-02-15 10:03:39 -08:00
configure configure: restore old behaviour 2012-12-19 16:01:39 -08:00
COPYING Update address of FSF in license 2008-03-08 13:31:03 -08:00
Makefile Remove -Werror 2013-07-31 17:42:39 -07:00
README README: update mail address and download location 2013-01-18 09:54:58 -08:00
README.decnet Decnet documentation update 2005-06-13 18:47:56 +00:00
README.devel iproute2: fix minor typo in comments 2011-07-11 10:11:09 -07:00
README.distribution README cleanup's 2012-01-03 15:04:55 -08:00
README.iproute2+tc README cleanup's 2012-01-03 15:04:55 -08:00
README.lnstat Rename: misc/README.lnstat -> README.lnstat 2004-10-19 20:24:47 +00:00

This is a set of utilities for Linux networking.

Information:
    http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2

Download:
    http://www.kernel.org/pub/linux/utils/net/iproute2/

Repository:
    git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git

How to compile this.
--------------------
1. libdbm

arpd needs to have the db4 development libraries. For Debian
users this is the package with a name like libdb4.x-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines.  Often this is in the db-devel package.

2. make

The makefile will automatically build a Config file which
contains whether or not ATM is available, etc.

3. To make documentation, cd to doc/ directory , then
   look at start of Makefile and set correct values for
   PAGESIZE=a4		, ie: a4 , letter ...	(string)
   PAGESPERPAGE=2	, ie: 1 , 2 ...		(numeric)
   and make there. It assumes, that latex, dvips and psnup
   are in your path.

4. This package includes matching sanitized kernel headers because
   the build environment may not have up to date versions. See Makefile
   if you have special requirements and need to point at different
   kernel include files.

Stephen Hemminger
stephen@networkplumber.org

Alexey Kuznetsov
kuznet@ms2.inr.ac.ru