netdev - Re: [PATCH v2] bonding: move IPv6 support into a separate kernel module

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Date:	Wed, 25 Feb 2009 14:14:30 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	fubar@...ibm.com
Cc:	brian.haley@...com, arvidjaar@...l.ru, vladislav.yasevich@...com,
	chuck.lever@...cle.com, tytso@....edu, Valdis.Kletnieks@...edu,
	rjw@...k.pl, netdev@...r.kernel.org,
	bonding-devel@...ts.sourceforge.net, jamagallon@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] bonding: move IPv6 support into a separate kernel
 module

From: Jay Vosburgh <fubar@...ibm.com>
Date: Wed, 25 Feb 2009 14:10:58 -0800

> 	I've been fooling with the disable_ipv6 sysctl, and one issue is
> that, at least on the distro I'm testing on (SLES), it's not picked up
> from /etc/sysctl.conf at boot time (presumably because ipv6 isn't loaded
> yet, although I haven't really checked).

Correct, that's the problem.

We could create a blocker bitmap.  Two sysctls, "block_af" and
"unblock_af".  You write the AF_foo value for the protocol there and
it sets or clears the assosciated bit in the internal blocker bitmap.

Things like sys_socket() et al. key off of this.
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