netdev - Re: [PATCH 2.6.38-rc8 build failure] net: bridge builtin vs. ipv6 modular

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Date:	Thu, 10 Mar 2011 13:49:08 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	randy.dunlap@...cle.com
Cc:	netdev@....de, shemminger@...ux-foundation.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 2.6.38-rc8 build failure] net: bridge builtin vs. ipv6
 modular

From: Randy Dunlap <randy.dunlap@...cle.com>
Date: Thu, 10 Mar 2011 13:28:01 -0800

> This can be fixed in either of 2 ways.  One way is to require that the
> bridge code building depend on how the IPV6 code is built (builtin or modular);
> the other way is to handle the kconfig variations in net/bridge/br_multicast.c --
> but this loses some functionality if IPV6=m and BRIDGE=y.
> 
> I prefer the Kconfig patch over the br_multicast.c patch.
> Both patches are below for consideration.

I definitely prefer the Kconfig variant, although it's unfortunate that we
have a stateful dependency in the bridging multicast code.

IPV4 seems to let us use INADDR_ANY as the source address in the multicast
query, but IPV6 does not allow this (as per RFC 2710).

Anyways, I've applied the Kconfig patch, thanks Randy!
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