lkml.org 
[lkml]   [2007]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [patch 23/32] IPV4: Correct rp_filter help text.
Date
Chris Wright <chrisw@sous-sol.org> wrote:
>
> --- linux-2.6.20.13.orig/net/ipv4/Kconfig
> +++ linux-2.6.20.13/net/ipv4/Kconfig
> @@ -43,11 +43,11 @@ config IP_ADVANCED_ROUTER
> asymmetric routing (packets from you to a host take a different path
> than packets from that host to you) or if you operate a non-routing
> host which has several IP addresses on different interfaces. To turn
> - rp_filter off use:
> + rp_filter on use:
>
> - echo 0 > /proc/sys/net/ipv4/conf/<device>/rp_filter
> + echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter
> or
> - echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
> + echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter

BTW, this documentation is actually wrong. You can't enable rp_filter
on all interfaces with

echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter

You must do that in conjunction with

echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter

for it to work for <device>.

This is really counter-intuitive but it's apparently how it's always
worked.

Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-09 03:23    [W:0.160 / U:1.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site