netdev - Re: [PATCH] bridge: fix forwarding of IPv6

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Date:	Fri, 13 May 2011 14:00:15 -0700
From:	Noah Meyerhans <frodo@...gul.net>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	David Miller <davem@...emloft.net>,
	Ben Hutchings <ben@...adent.org.uk>,
	bridge@...ts.linux-foundation.org, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] bridge: fix forwarding of IPv6

On Fri, May 13, 2011 at 12:53:14PM -0700, Stephen Hemminger wrote:
> The commit 6b1e960fdbd75dcd9bcc3ba5ff8898ff1ad30b6e
>     bridge: Reset IPCB when entering IP stack on NF_FORWARD
> broke forwarding of IPV6 packets in bridge because it would
> call bp_parse_ip_options with an IPV6 packet.
> 
> Reported-by: Noah Meyerhans <noahm@...ian.org>
> Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
> 
> ---
> Patch against net-next-2.6 but must be applied to net-2.6
> and stable as well
> 
> --- a/net/bridge/br_netfilter.c	2011-05-13 12:37:30.289646958 -0700
> +++ b/net/bridge/br_netfilter.c	2011-05-13 12:38:07.820333938 -0700
> @@ -737,7 +737,7 @@ static unsigned int br_nf_forward_ip(uns
>  		nf_bridge->mask |= BRNF_PKT_TYPE;
>  	}
>  
> -	if (br_parse_ip_options(skb))
> +	if (pf == PF_INET && br_parse_ip_options(skb))
>  		return NF_DROP;
>  
>  	/* The physdev module checks on this */
> 

I can confirm that this patch fixes the behavior I've been seeing in the
stable-2.6.38.y tree.  Thank you, Stephen!

noah



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